Month: October 2022

In 2015,CrystEngComm included an article by Forgan, Ross S.; Marshall, Ross J.; Struckmann, Mona; Bleine, Aurore B.; Long, De-Liang; Bernini, Maria C.; Fairen-Jimenez, David. Synthetic Route of C11H9N3O. The article was titled 《Structure-directing factors when introducing hydrogen bond functionality to metal-organic frameworks》. The information in the text is summarized as follows:

The introduction of H-bond donor/acceptor functionality into metal-organic frameworks (MOFs) can have a beneficial effect on their mol. recognition, uptake selectivity and catalytic properties. The changes in ligand geometry induced by incorporation of functional groups may also affect the topol. and composition of the resultant MOFs. Herein, the authors present a comprehensive study of functional group incorporation into MOFs, linked by either Zn2+ paddlewheel units or monomeric Zn2+ corners, which exhibit pcu and dia topol., resp. Crystallog. anal. shows that amide groups can be easily incorporated into isoreticular pcu pillared-MOFs, while integration of urea units results in materials with dia topol. Mol. simulations allow the examination of hypothetical structures with differing constitutions and topologies, and highlight the influence of the urea units in generating the exptl. observed topologies. Noncovalent interactions between independent nets may be significant structure-directing influences, a finding which has great implications for the design of MOFs containing more complex functional groups. The experimental process involved the reaction of N-(Pyridin-4-yl)isonicotinamide(cas: 64479-78-3Synthetic Route of C11H9N3O)

N-(Pyridin-4-yl)isonicotinamide(cas: 64479-78-3) belongs to amides. The solubilities of amides and esters are roughly comparable. Typically amides are less soluble than comparable amines and carboxylic acids since these compounds can both donate and accept hydrogen bonds.Synthetic Route of C11H9N3O

Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

Stockmann, Vegar; Fiksdahl, Anne published their research in Tetrahedron on August 4 ,2008. The article was titled 《Preparation of new pyrido[3,4-b]thienopyrroles and pyrido[4,3-e]thienopyridazines》.Category: amides-buliding-blocks The article contains the following contents:

Two new types of pyrido-fused tris-heterocycles (1a,b and 2a,b) were prepared from 3-aminopyridine in five/six steps. A synthetic strategy for the preparation of the novel pyrido[3,4-b]thieno[2,3- and 3,2-d]pyrroles (1a,b) and pyrido[4,3-e]thieno[2,3- and 3,2-c]pyridazines (2a,b) was studied. The Suzuki cross coupling of the appropriate 2- and 3-thienoboronic acids (3,4) and 4-bromo-3-pyridylpivaloylamide (9) afforded the biaryl coupling products (10,11) in high yields (85%). Diazotization of the hydrolyzed (2-thienyl)-coupling product (12) and azide substitution gave the 3-azido-4-(2-thienyl)pyridine intermediate (72%, 14). 3-Azido-4-(3-thienyl)pyridine (15) was prepared by exchanging the previous order of reactions. The desired β-carboline thiophene analogs (1a,b) were obtained via the nitrene by thermal decomposition of the azido precursors (14,15). By optimizing conditions for intramol. diazocoupling, the corresponding pyridazine products (72-83%, 2a,b) were afforded. After reading the article, we found that the author used 2,2-Dimehtyl-N-pyridin-3-yl-propionamide(cas: 70298-88-3Category: amides-buliding-blocks)

2,2-Dimehtyl-N-pyridin-3-yl-propionamide(cas: 70298-88-3) belongs to anime. Hydrogen peroxide (H2O2) and peroxy acids generally add an oxygen atom to the nitrogen of amines. With primary amines, this step is normally followed by further oxidation, leading to nitroso compounds, RNO, or nitro compounds, RNO2. Secondary amines are converted to hydroxylamines, R2NOH, and tertiary amines to amine oxides, R3NO.Category: amides-buliding-blocks

Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

The author of 《Efficient synthesis of amino acid polymers for protein stabilization》 were Li, Bing; Wu, Yueming; Zhang, Wenjing; Zhang, Si; Shao, Ning; Zhang, Weiwei; Zhang, Lixin; Fei, Jian; Dai, Yidong; Liu, Runhui. And the article was published in Biomaterials Science in 2019. Formula: C11H22N2O4 The author mentioned the following in the article:

Proteins are fragile such that even freezing, drying and dehydration may induce their denaturation, aggregation, and activity loss. To protect proteins from these kinds of damage, we prepared two types of amino acid polymers, PLG-r-PLL and PLG, from the efficient ring-opening polymerization of α-amino acid N-carboxyanhydride using LiHMDS as the initiator. β-Galactosidase was used in this study to examine the protein protecting effect of the synthesized amino acid polymers during lyophilization. The results indicate that both PLG-r-PLL and PLG exert significant protection on β-Gal during lyophilization and improve the activity of the resulting protein from 40%, without using a protecting agent during lyophilization, to 80% of the original protein activity. Nevertheless, PLG generally performs better than PLG-r-PLL independent of the chain length. Our studies also show that PLG and PLG-r-PLL with a high content of PLG subunits display no observable cytotoxicity and hemolytic effect. Furthermore, DLS and TEM characterization indicate that PLG protects β-Gal upon lyophilization by preventing the aggregation of β-Gal. Our studies demonstrate that amino acid polymers, such as PLG, can exert potent activity for protein stabilization. The easy operation of LiHMDS-initiated and efficient NCA polymerization implies the great potential of this strategy to prepare amino acid polymers quickly for the screening of protein stabilization and mechanism study. In the experiment, the researchers used many compounds, for example, H-Lys(Boc)-OH(cas: 2418-95-3Formula: C11H22N2O4)

H-Lys(Boc)-OH(cas: 2418-95-3) belongs to amino acids. In addition to subunits of proteins, amino acids have many other functions as well, including osmoregulation (proline), neurotransmitters (gamma-aminobutyric acid), metabolic intermediates (ornithine and citrulline), and inhibitors (dehydroproline).Formula: C11H22N2O4

Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

In 2015,Cameron, Alex; Fisher, Brendan; Fisk, Nicholas; Hummel, Jessica; White, Jonathan M.; Krenske, Elizabeth H.; Rizzacasa, Mark A. published 《Towards the Synthesis of Dihydrooxepino[4,3-b]pyrrole-Containing Natural Products via Cope Rearrangement of Vinyl Pyrrole Epoxides》.Organic Letters published the findings.Name: tert-Butyl N,N’-diisopropylcarbamimidate The information in the text is summarized as follows:

An approach to the dihydrooxepino[4,3-b]pyrrole core of diketopiperazine natural products which utilizes a vinyl pyrrole epoxide Cope rearrangement was investigated. It was found that an ester substituent on the epoxide was essential for the [3,3]-rearrangement to occur. D. functional calculations with M06-2X provided explanations for the effects of the pyrrole and ester groups on these rearrangements.tert-Butyl N,N’-diisopropylcarbamimidate(cas: 71432-55-8Name: tert-Butyl N,N’-diisopropylcarbamimidate) was used in this study.

tert-Butyl N,N’-diisopropylcarbamimidate(cas: 71432-55-8) belongs to anime. Large quantities of aliphatic amines are made synthetically. The most widely used industrial method is the reaction of alcohols with ammonia at a high temperature, catalyzed by metals or metal oxide catalysts (e.g., nickel or copper). Mixtures of primary, secondary, and tertiary amines are thereby produced.Name: tert-Butyl N,N’-diisopropylcarbamimidate

Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

In 2017,Ghatak, Tapas; Fridman, Natalia; Eisen, Moris S. published 《Actinide Complexes Possessing Six-Membered N-Heterocyclic Iminato Moieties: Synthesis and Reactivity》.Organometallics published the findings.Product Details of 71432-55-8 The information in the text is summarized as follows:

A novel class of ligand systems possessing a six-membered N-heterocyclic iminato [perimidin-2-iminato (PrRN where R = iso-Pr, cycloheptyl)] moiety is introduced. The complexation of these ligands with early actinides (An = Th and U) results in powerful catalysts [(PrRN)AnN{(SiMe3)2}3] (3-6)for exigent insertion of alcs. into carbodiimides to produce the corresponding isoureas in short reaction times with excellent yields. Exptl., thermodn., and kinetic data as well as the results of stoichiometric reactions provide cumulative evidence that support a plausible mechanism for the reaction.tert-Butyl N,N’-diisopropylcarbamimidate(cas: 71432-55-8Product Details of 71432-55-8) was used in this study.

tert-Butyl N,N’-diisopropylcarbamimidate(cas: 71432-55-8) belongs to anime. Reduction of nitro compounds, RNO2, by hydrogen or other reducing agents produces primary amines cleanly (i.e., without a mixture of products), but the method is mostly used for aromatic amines because of the limited availability of aliphatic nitro compounds. Reduction of nitriles and oximes (R2C=NOH) also yields primary amines.Product Details of 71432-55-8

Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

The author of 《Making Carbonyls of Amides Nucleophilic and Hydroxyls of Alcohols Electrophilic Mediated by SO2F2 for Synthesis of Esters from Amides》 were Fang, Wan-Yin; Zha, Gao-Feng; Qin, Hua-Li. And the article was published in Organic Letters in 2019. Electric Literature of C4H9NO2 The author mentioned the following in the article:

The promotion of sulfuryl fluoride, the carbonyl groups of amides performed as nucleophiles while the hydroxyl groups of alcs. were activated to functionalize as electrophiles is reported. This study displayed that the amide C-N bonds could be easily cleaved with delicate nucleophiles to form the ester C-O bonds at room temperature without using transition metals. The broad substrate scope and excellent functional group compatibility were proved with 44 examples in up to 99% yields. The experimental part of the paper was very detailed, including the reaction process of N-Methoxy-N-methylacetamide(cas: 78191-00-1Electric Literature of C4H9NO2)

N-Methoxy-N-methylacetamide(cas: 78191-00-1) belongs to anime. Hydrogen peroxide (H2O2) and peroxy acids generally add an oxygen atom to the nitrogen of amines. With primary amines, this step is normally followed by further oxidation, leading to nitroso compounds, RNO, or nitro compounds, RNO2. Secondary amines are converted to hydroxylamines, R2NOH, and tertiary amines to amine oxides, R3NO.Electric Literature of C4H9NO2

Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

The author of 《Ligand-Enabled Gold-Catalyzed C(sp2)-N Cross-Coupling Reactions of Aryl Iodides with Amines》 were Akram, Manjur O.; Das, Avishek; Chakrabarty, Indradweep; Patil, Nitin T.. And the article was published in Organic Letters in 2019. Quality Control of 4-Methylbenzenesulfonamide The author mentioned the following in the article:

The first example of ancillary (P,N)-ligand-enabled gold-catalyzed C-N cross-coupling reactions of aryl iodides with amines is reported. The high generality of the reaction in de novo synthesis, late-stage modifications, and cascade processes to access functionalized indolinones and carbazoles underscores the synthetic potential of the presented strategy. Monitoring the reaction with ESI-HRMS and NMR provided strong evidence for the in situ formation of putative high valent Au(III) intermediates. The experimental part of the paper was very detailed, including the reaction process of 4-Methylbenzenesulfonamide(cas: 70-55-3Quality Control of 4-Methylbenzenesulfonamide)

4-Methylbenzenesulfonamide(cas: 70-55-3) belongs to anime. Amine, any member of a family of nitrogen-containing organic compounds that is derived, either in principle or in practice, from ammonia (NH3). Naturally occurring amines include the alkaloids, which are present in certain plants; the catecholamine neurotransmitters (i.e., dopamine, epinephrine, and norepinephrine); and a local chemical mediator, histamine, that occurs in most animal tissues.Quality Control of 4-Methylbenzenesulfonamide

Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

Zhang, Fuhao; Zeng, Jingwen; Gao, Mohan; Wang, Linzhou; Chen, Gen-Qiang; Lu, Yixin; Zhang, Xumu published their research in Nature Chemistry in 2021. The article was titled 《Concise, scalable and enantioselective total synthesis of prostaglandins》.HPLC of Formula: 78191-00-1 The article contains the following contents:

Prostaglandins are among the most important natural isolates owing to their broad range of bioactivities and unique structures. However, current methods for the synthesis of prostaglandins suffer from low yields and lengthy steps. Here, we report a practicability-oriented synthetic strategy for the enantioselective and divergent synthesis of prostaglandins. In this approach, the multiply substituted five-membered rings in prostaglandins were constructed via the key enyne cycloisomerization with excellent selectivity (>20:1 d.r., 98% e.e.). The crucial chiral center on the scaffold of the prostaglandins was installed using the asym. hydrogenation method (up to 98% yield and 98% e.e.). From our versatile common intermediates, a series of prostaglandins and related drugs could be produced in two steps, and fluprostenol could be prepared on a 20-g scale. In the experiment, the researchers used many compounds, for example, N-Methoxy-N-methylacetamide(cas: 78191-00-1HPLC of Formula: 78191-00-1)

N-Methoxy-N-methylacetamide(cas: 78191-00-1) belongs to anime. Milder oxidation, using reagents such as NaOCl, can remove four hydrogen atoms from primary amines of the type RCH2NH2 to form nitriles (R―C≡N), and oxidation with reagents such as MnO2 can remove two hydrogen atoms from secondary amines (R2CH―NHR′) to form imines (R2C=NR′). Tertiary amines can be oxidized to enamines (R2C=CHNR2) by a variety of reagents.HPLC of Formula: 78191-00-1

Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

Recommanded Product: 4-MethylbenzenesulfonamideIn 2019 ,《The N-alkylation of sulfonamides with alcohols in water catalyzed by a water-soluble metal-ligand bifunctional iridium complex [Cp*Ir(biimH2)(H2O)][OTf]2》 was published in New Journal of Chemistry. The article was written by Ai, Yao; Liu, Pengcheng; Liang, Ran; Liu, Yan; Li, Feng. The article contains the following contents:

The iridium complex [Cp*Ir(biimH2)(H2O)][OTf]2 (Cp* = η5-pentamethylcyclopentadienyl, biimH2 = 2,2′-biimidazole) was synthesized and developed as a new-type of water-soluble metal-ligand bifunctional catalyst for the N-alkylation of poorly nucleophilic sulfonamides with alcs. in water. In the presence of catalyst (1 mol%) and Cs2CO3 (0.1 equivalent), a series of desirable products was obtained in 74-91% yields under microwave irradiation Mechanistic experiments revealed that the presence of NH units in the imidazole ligand was crucially important for the catalytic activity of the iridium complex. Notably, this research would facilitate the process of water-soluble metal-ligand bifunctional catalysis for the hydrogen autotransfer process. In the part of experimental materials, we found many familiar compounds, such as 4-Methylbenzenesulfonamide(cas: 70-55-3Recommanded Product: 4-Methylbenzenesulfonamide)

4-Methylbenzenesulfonamide(cas: 70-55-3) belongs to anime. Reduction of nitro compounds, RNO2, by hydrogen or other reducing agents produces primary amines cleanly (i.e., without a mixture of products), but the method is mostly used for aromatic amines because of the limited availability of aliphatic nitro compounds. Reduction of nitriles and oximes (R2C=NOH) also yields primary amines.Recommanded Product: 4-Methylbenzenesulfonamide

Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

《Donor disposition and aliphatic conformation effects on structure in luminescent zinc dicarboxylate coordination polymers with isomeric dipyridylamide coligands》 was published in CrystEngComm in 2013. These research results belong to Uebler, Jacob W.; Wilson, Julie A.; LaDuca, Robert L.. Recommanded Product: N-(Pyridin-4-yl)isonicotinamide The article mentions the following:

Hydrothermal reaction of zinc nitrate, a four-carbon chain dicarboxylic acid, and one of three isomeric dipyridylamide coligands has afforded a family of six new coordination polymers, which were structurally characterized by single-crystal x-ray diffraction. The binding modes and conformations of the dicarboxylate ligands and the nitrogen donor disposition within the dipyridylamide coligands provide crucial structure-directing roles in this system. {[Zn(fum)(3-pina)]·1.5H2O}n (1, fum = fumarate, 3-pina = 3-pyridylisonicotinamide) has a 4-fold interpenetrated 43628 sra topol. [Zn(fum)(4-pna)]n (2, 4-pna = 4-pyridylnicotinamide) possesses a 4-fold interpenetrated 66dia topol., while [Zn(fum)(4-pina)]n (3, 4-pina = 4-pyridylisonicotinamide) has a 2-fold interpenetrated 41263pcu topol. with dimeric cluster nodes. [Zn3(mal)2(OH)2(4-pina)2]n (4, mal = maleate) has neutral [Zn3(mal)2(OH)2]n ribbons linked into a (3,6) triangular layer. [Zn(suc)(4-pina)]n (5, suc = succinate) displays an uncommon 6-connected self-penetrated 446108 mab topol., while instead [Zn(suc)(4-pna)]n (6) has a simple corrugated (4,4) grid structure. Thermal and luminescent properties of these new materials also were studied. The experimental process involved the reaction of N-(Pyridin-4-yl)isonicotinamide(cas: 64479-78-3Recommanded Product: N-(Pyridin-4-yl)isonicotinamide)

N-(Pyridin-4-yl)isonicotinamide(cas: 64479-78-3) belongs to amides.Recommanded Product: N-(Pyridin-4-yl)isonicotinamideAmides are pervasive in nature and technology. Proteins and important plastics like Nylons, Aramid, Twaron, and Kevlar are polymers whose units are connected by amide groups (polyamides); these linkages are easily formed, confer structural rigidity, and resist hydrolysis.

Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics