Category: amides-buliding-blocks

The author of 《Oxidative sulfamidation of vinyl silanes: A route to diverse silylated N-Heterocycles》 were Astakhova, Vera V.; Shainyan, Bagrat A.; Moskalik, Mikhail Yu.; Sterkhova, Irina V.. And the article was published in Tetrahedron in 2019. Product Details of 70-55-3 The author mentioned the following in the article:

The reaction of trimethyl(vinyl)silane 1 and dimethyl(divinyl)silane 2 with various sulfonamides in the oxidative system (tert-BuOCl + NaI) has been studied and shown to be an efficient approach for the synthesis of silylated N-heterocycles. Triflamide demonstrated the reactivity principally different from that of arenesulfonamides. With silane 1, it afforded the products of iodochlorination and bis(triflamidation) (major), whereas arenesulfonamides gave N-arenesulfonylaziridines in up to 91% yield. Silane 2 with arenesulfonamides yielded the products of mono and bis(iodochlorination), mono and bis(aziridination), and 3,5-diiodo-4,4-dimethyl-1-(arylsulfonyl)-1,4-azasilinanes. By contrast, triflamide, apart from the products of halogenation and iodotriflamidation, unexpectedly gave 3-(trifluoromethylsulfonyl)-5-(triflamido)oxazolidine as the main product. The structure of most heterocyclic products is proved by X-ray anal. The effect of the silyl group in the substrate and of the substituent in the reagent on the course of oxidative sulfamidation is discussed by comparing with all-carbon analogs.4-Methylbenzenesulfonamide(cas: 70-55-3Product Details of 70-55-3) was used in this study.

4-Methylbenzenesulfonamide(cas: 70-55-3) belongs to anime. Many important products require amines as part of their syntheses. Methylamine is utilized in the production of the analgesic meperidine (trade name Demerol) and the photographic developer Metol (trademark), and dimethylamine is used in the synthesis of the antihistamine diphenhydramine (trade name Benadryl), the solvent dimethylformamide (DMF), and the rocket propellant 1,1-dimethylhydrazine. The synthesis of the insect repellent N,N-diethyl-m-toluamide (DEET) incorporates diethylamine while that of the synthetic fibre Kevlar requires aromatic amines.Product Details of 70-55-3

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

The author of 《Synthesis of Imides, Imidates, Amidines, and Amides by Intercepting the Aryne-Isocyanide Adduct with Weak Nucleophiles》 were Ghorai, Sourav; Lee, Daesung. And the article was published in Organic Letters in 2019. Computed Properties of C7H9NO2S The author mentioned the following in the article:

New aryne-based multicomponent coupling reactions for the formation of functionalized aromatic compounds have been developed. Arynes generated from triynes or tetraynes through the hexadehydro Diels-Alder reaction readily react with isocyanide to generate nitrilium intermediate. Intercepting this nitrilium species with various weak nucleophile including carboxylic acids, alcs., sulfonamides, or water generated the corresponding imides, imidates, amidines, or amides. The high regioselectivity of these transformations was mainly controlled by the substituents of the arynes. In addition to this study using 4-Methylbenzenesulfonamide, there are many other studies that have used 4-Methylbenzenesulfonamide(cas: 70-55-3Computed Properties of C7H9NO2S) was used in this study.

4-Methylbenzenesulfonamide(cas: 70-55-3) belongs to anime. Primary amines having a tertiary alkyl group (R3CNH2) are difficult to prepare with most methods but are made industrially by the Ritter reaction. In this method a tertiary alcohol reacts with hydrogen cyanide (HCN) in the presence of a concentrated strong acid; a formamide, RNH―CHO, is formed first, which then undergoes hydrolysis.Computed Properties of C7H9NO2S

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

The author of 《A tandem coupling/Smiles rearrangement/cyclization approach to 1,4-benzoxazinone or 1,4-pyridooxazinones under mild conditions》 were Zhan, Chunjing; Jia, Jiong; Yang, Bingchuan; Huang, Aiping; Liu, Yanli; Ma, Chen. And the article was published in RSC Advances in 2012. Related Products of 4746-61-6 The author mentioned the following in the article:

A facile and efficient approach to 1,4-benzoxazinone or 1,4-pyridooxazinone scaffolds is developed by a Smiles rearrangement tandem reaction. 1,4-Benzoxazinone derivatives or 1,4-pyridooxazinone derivatives with diversity at two substituents on their scaffolds were synthesized conveniently in the presence of cesium carbonate at room temperature in good to excellent yields. The reaction mechanism is assumed by a tandem coupling/Smiles rearrangement/cyclization process. The synthesis of the target compounds was achieved using fluoro(nitro)benzene derivatives and chloro(nitro)benzene derivatives and 2-hydroxyacetamide derivatives as starting materials. The title compounds thus formed included 3,4-dihydro-3-oxo-4-phenyl-2H-1,4-benzoxazine-7-carbonitrile (I), 4-(phenylmethyl)-2H-pyrido[3,2-b][1,4]oxazin-3(4H)-one (II), 5-chloro-4-(phenylmethyl)-2H-1,4-benzoxazin-3(4H)-one (III) and related substances. The experimental process involved the reaction of 2-Hydroxy-N-phenylacetamide(cas: 4746-61-6Related Products of 4746-61-6)

2-Hydroxy-N-phenylacetamide(cas: 4746-61-6) belongs to amides. Because of the greater electronegativity of oxygen, the carbonyl (C=O) is a stronger dipole than the N–C dipole.Related Products of 4746-61-6 The presence of a C=O dipole and, to a lesser extent a N–C dipole, allows amides to act as H-bond acceptors. In primary and secondary amides, the presence of N–H dipoles allows amides to function as H-bond donors as well.

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

Rocca, Patrick; Marsais, Francis; Godard, Alain; Queguiner, Guy published an article in Tetrahedron. The title of the article was 《Connection between metalation and cross-coupling strategies. A new convergent route to azacarbazoles》.Computed Properties of C10H14N2O The author mentioned the following in the article:

New convergent synthesis of azacarbazoles through metalation, cross-coupling reaction, and intramol. substitution via (2-aminobenzene)boronic acid and ortho-fluoroiodopyridines are presented. Thus, 2-(HO)2BC6H4NHCOCMe3 coupled with pyridines I (X = F, Cl, Y = iodo, Z = H; X = H, Y = F, Z = iodo; X = H, Y = iodo, Z = F; X = iodo, Y = F, Z = H) to give the corresponding (pyridylphenyl)propanamides II (R = F, Cl). The 3-fluoro-4-pyridyl derivative of II was treated with pyridinium chloride under reflux to give β-carboline III. The α-, γ-, and δ-carbolines were prepared similarly. In the experiment, the researchers used many compounds, for example, 2,2-Dimehtyl-N-pyridin-3-yl-propionamide(cas: 70298-88-3Computed Properties of C10H14N2O)

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.Computed Properties of C10H14N2O

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

Bonnet, Veronique; Mongin, Florence; Trecourt, Francois; Queguiner, Guy published their research in Perkin 1 on December 21 ,2000. The article was titled 《Reaction of magnesiated bases on substituted pyridines: deprotonation or 1,4-addition?》.Quality Control of 2,2-Dimehtyl-N-pyridin-3-yl-propionamide The article contains the following contents:

N-(tert.-Butyl)pyridine-2-carboxamide, N-phenylpyridine-2-carboxamide, and 2,2-dimethyl-N-(2-pyridyl)propanamide are readily deprotonated at C-3 with a stoichiometric amount of iso-PrMgCl or Bu2Mg in THF under reflux. Subsequent trapping with various electrophiles (deuterated water, aldehydes, iodine and di-Me disulfide) gives 2,3-disubstituted pyridines carrying a useful carboxylic acid- or amino-derived function at C-2. When N-(tert.-butyl)pyridine-3-carboxamide and 2,2-dimethyl-N-(3-pyridyl)propanamide are subjected to the same reaction conditions, 1,4-addition to the pyridine ring occurs, giving 4-alkyl derivatives Starting from N-(tert-butyl)pyridine-4-carboxamide, 1,2-addition and deprotonation reactions occur simultaneously. In the part of experimental materials, we found many familiar compounds, such as 2,2-Dimehtyl-N-pyridin-3-yl-propionamide(cas: 70298-88-3Quality Control of 2,2-Dimehtyl-N-pyridin-3-yl-propionamide)

2,2-Dimehtyl-N-pyridin-3-yl-propionamide(cas: 70298-88-3) belongs to anime. Amines have a free lone pair with which they can coordinate to metal centers. Amine–metal bonds are weaker because amines are incapable of backbonding, but they are still important for sensing applications.While stronger than hydrogen bonds, amine–metal bonds are still weaker than both covalent and ionic bonds.Quality Control of 2,2-Dimehtyl-N-pyridin-3-yl-propionamide

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

Application In Synthesis of (S)-N-Methyl-N-methoxy-2-(tert-butoxycarbonylamino)-4-methylpentanamideOn November 17, 2000 ,《A Synthetic Approach to 3-Hydroxy 4-Substituted Carboxylic Acids based on the Stereoselective Reduction of 1-Trimethylsilyl-1-alkyn-3-ones》 appeared in Tetrahedron. The author of the article were Alemany, Carme; Bach, Jordi; Garcia, Jordi; Lopez, Marta; Rodriguez, Ana B.. The article conveys some information:

The oxazaborolidine-mediated reduction of chiral, 4-substituted 1-trimethylsilyl-1-alkyn-3-ones followed by hydroboration affords syn or anti 3-hydroxy 4-substituted carboxylic acids, common substructures of a number of biol. active macrolides, peptides and depsipeptides, with high control on the new C(3) stereocenter. This strategy has been applied to the synthesis of (3S,4S)-3-hydroxy-4-methylheptanoic acid and of N-Boc-statine, constituents of permentin A and pepstatin, resp. In the experiment, the researchers used many compounds, for example, (S)-N-Methyl-N-methoxy-2-(tert-butoxycarbonylamino)-4-methylpentanamide(cas: 87694-50-6Application In Synthesis of (S)-N-Methyl-N-methoxy-2-(tert-butoxycarbonylamino)-4-methylpentanamide)

(S)-N-Methyl-N-methoxy-2-(tert-butoxycarbonylamino)-4-methylpentanamide(cas: 87694-50-6) belongs to amides.Application In Synthesis of (S)-N-Methyl-N-methoxy-2-(tert-butoxycarbonylamino)-4-methylpentanamide 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.

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

Synthetic Route of C13H26N2O4On March 4, 2011, Ko, Eunhwa; Burgess, Kevin published an article in Organic Letters. The article was 《Pyrrole-based scaffolds for turn mimics》. The article mentions the following:

Two amino acid derived synthons were combined to give homopropargylic amines (I) (R1 = CH(Me)Et, iso-Pr, CH2C6H4OCH2Ph, R2 = i-Bu; R1 = CH(Me)Et, (CH2)2SMe, R2 = CH2C6H4OCH2Ph; R1 = CH(Me)OCH2Ph, R2 = H; Boc = tert-butoxycarbonyl). Platinum dichloride was used to cyclize these intermediates into pyrroles (II) (Boc, R1 and R2 are defined for I) which collapsed to the target secondary structure mimics (III) (R1 and R2 are defined for I) on treatment with base. Side chains of these compounds overlay with an idealized type III β-turn and with an inverse γ-turn. The experimental process involved the reaction of (S)-N-Methyl-N-methoxy-2-(tert-butoxycarbonylamino)-4-methylpentanamide(cas: 87694-50-6Synthetic Route of C13H26N2O4)

(S)-N-Methyl-N-methoxy-2-(tert-butoxycarbonylamino)-4-methylpentanamide(cas: 87694-50-6) belongs to amides.Synthetic Route of C13H26N2O4Amides 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

Recommanded Product: N-(Pyridin-4-yl)isonicotinamideOn November 23, 2004 ,《Nonpolymeric Hydrogelator Derived from N-(4-Pyridyl)isonicotinamide》 appeared in Langmuir. The author of the article were Kumar, D. Krishna; Jose, D. Amilan; Dastidar, Parthasarathi; Das, Amitava. The article conveys some information:

A series of pyridyl amides derived from isonicotinic acid, nicotinic acid, and benzoic acid have been synthesized. Only N-(4-pyridyl)isonicotinamide 1 is found to be an efficient hydrogelator with a min. gelator concentration of 0.37 wt %. A wide range of concentrations (0.37-20 wt %) could be used to form hydrogels. The other amides, namely, N-(3-pyridyl)isonicotinamide 2, N-(2-pyridyl)isonicotinamide 3, N-(phenyl)isonicotinamide 4, N-(4-pyridyl)nicotinamide 5, N-(3-pyridyl)nicotinamide 6, and N-(4-pyridyl)benzamide 7, did not show any gelation properties. Fourier transform IR spectroscopy, variable temperature 1H NMR, single-crystal diffraction and X-ray powder diffraction (XRPD), and SEM have been used to characterize the gel. Single-crystal diffraction and XRPD studies indicate that the morph responsible for gel formation is different from that in its bulk solid and xerogel. In the part of experimental materials, we found many familiar compounds, such as 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. Amides include many other important biological compounds, as well as many drugs like paracetamol, penicillin and LSD. Low-molecular-weight amides, such as dimethylformamide, are common solvents.Recommanded Product: N-(Pyridin-4-yl)isonicotinamide

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

SDS of cas: 2418-95-3On September 4, 2020 ,《Construction of cyclophane-braced peptide macrocycles via palladium-catalyzed picolinamide-directed intramolecular C(sp2)-H arylation》 was published in Organic Letters. The article was written by Han, Boyang; Li, Bo; Qi, Liping; Yang, Peng; He, Gang; Chen, Gong. The article contains the following contents:

A versatile method for the construction of C(sp2)-linked cyclophane peptide macrocycles via Pd-catalyzed picolinamide-directed intramol. arylation of aryl and alkenyl C-H bonds of amino acid side chains with aryl iodides is developed. This method provides simple and efficient access to a variety of cyclophane-braced structures from readily accessible linear peptide precursors. In the experimental materials used by the author, we found H-Lys(Boc)-OH(cas: 2418-95-3SDS of cas: 2418-95-3)

H-Lys(Boc)-OH(cas: 2418-95-3) belongs to amino acids. Amino acids are not generally considered to be electrochemically active because products of the oxidation accumulate on the electrode surface and prevent it from participating in any further electrochemical processes.SDS of cas: 2418-95-3

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

Safety of H-Lys(Boc)-OHOn March 25, 2022, Ibara, Miho; Abe, Takumi; Sawada, Daisuke published an article in Organic Letters. The article was 《Chemo- and site-selective replacement of N-terminal carbamates in peptides》. The article mentions the following:

In peptide synthesis, it is important to distinguish the terminal amino group and carry out the selective transformation of only the N-terminal protecting group. We describe herein a reaction for the chemo- and site-selective replacement of carbamates with various other carbamates only at the N-terminus of peptides. We demonstrate the scope of carbamates and peptides and the introduction of fluorine into a peptide. This strategy is applicable to the late stage of peptide synthesis.H-Lys(Boc)-OH(cas: 2418-95-3Safety of H-Lys(Boc)-OH) was used in this study.

H-Lys(Boc)-OH(cas: 2418-95-3) belongs to amino acids. Amino acids are not generally considered to be electrochemically active because products of the oxidation accumulate on the electrode surface and prevent it from participating in any further electrochemical processes.Safety of H-Lys(Boc)-OH

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