Amides-buliding-blocks

78888-18-3, The chemical industry reduces the impact on the environment during synthesis 78888-18-3, name is tert-Butyl allylcarbamate, I believe this compound will play a more active role in future production and life.

A degassed suspension of Example 294E (2.50 g, 4.51 mmol), Example 314A (2.62 g, 5.87 mmol), and potassium fluoride (0.340 g, 5.87 mmol) in toluene (45 mL) was treated with Pd(PPh3)4 (0.360 g, 0.316 mmol), degassed twice more, and then heated to 115 C. for 14 hours. The suspension was cooled to room temperature and the solvent was removed under reduced pressure. The resulting solid was triturated with ethanol/dichloromethane (10:1) (100 mL) and collected by vacuum filtration provide the desired product (2.3 g, 90%). LCMS (Thermoquest AQA single-quad MS, Genesis C18 column, 3 ?m particle size, 33?4.6 mm; 70% 50 mM ammonium acetate in water to 95% acetonitrile over 6 min, 0.8 to 0.5 mL/min); MS m/e 584.6 (M+H)+, Rt=4.1 minutes; 1H NMR (DMSO-d6, 400 MHz) ? 9.51 (s,1H), 7.99 (d, J=8.0 Hz,1H), 7.95 (s, 1H), 7.70 (d, J=8.0 Hz, 1H), 7.63 (s, 1H), 7.58 (d, J=8.4 Hz, 1H), 7.35 (s, 1H), 7.32 (d, J=8.4 Hz, 1H), 7.21 (d, J=1.5 Hz, 1H), 7.15 (dd, J=7.8 Hz, 7.0 Hz, 1H), 7.08 (dd, J=8.0 Hz, 1.9 Hz, 1H), 6.58 (d, J=16.2 Hz, 1H), 6.21 (td, J=16.2 Hz, J=5.5 Hz, 1H), 5.65 (br s, 1H), 4.04 (s, 3H), 3.91 (s, 3H), 3.80 (br m, 2H), 1.42 (s, 9H).

The chemical industry reduces the impact on the environment during synthesis tert-Butyl allylcarbamate. I believe this compound will play a more active role in future production and life.

Reference:
Patent; Betschmann, Patrick; Burchat, Andrew; Calderwood, David; Curtin, Michael L.; Davidsen, Steven K.; Davis, Heather M.; Frey, Robin R.; Heyman, Howard R.; Hirst, Gavin; Hrnciar, Peter; Michaelides, Michael; Rafferty, Paul; US2005/20619; (2005); A1;,
Amide – Wikipedia,
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As we all know, there are many different methods for the synthesis of a compound, and people can choose the synthesis method that suits their own laboratory according to the actual situation. 67442-07-3 name is 2-Chloro-N-methoxy-N-methylacetamide, This compound is widely used in many fields, so it is necessary to find a new synthetic route. The downstream synthesis method of this compound is introduced below. 67442-07-3

4-Iodo-1-(4-methoxybenzyl)-1H-pyrazole (8.1 g, 26 mmol) was dissolved in THF (50 mL) and cooled in an ice bath. Isopropylmagnesium chloride (2.9 M, 8.9 mL, 26 mmol) was added slowly. The reaction mixture was stirred for 10 minutes, and then 2- chloro-N-methoxy-N-methylacetamide (3.5 g, 26 mmol) dissolved in THF (15 mL) was added slowly by syringe. The reaction mixture was warmed to ambient temperature and stirred for 1 hour. The reaction mixture was partitioned between EtOAc and iN HC1, and the organic layer was dried over sodium sulfate, filtered and concentrated to afford crude 2-chloro-1-(l-(4- methoxybenzyl)- 1 H-pyrazol-4-yl)ethanone (7.1 g, 27 mmol, 104 percent yield) as an amber oil that slowly solidified.

At the same time, in my other blogs, there are other synthetic methods of this type of compound, 2-Chloro-N-methoxy-N-methylacetamide, and friends who are interested can also refer to it.

Reference:
Patent; ARRAY BIOPHARMA INC.; CELGENE CORPORATION; ALLEN, Shelley; BOYS, Mark Laurence; CHICARELLI, Mark J.; FELL, Jay Bradford; FISCHER, John P.; GAUDINO, John; HICKEN, Erik James; HINKLIN, Ronald Jay; KRASER, Christopher F.; LAIRD, Ellen; ROBINSON, John E.; TANG, Tony P.; BURGESS, Laurence E.; RIEGER, Robert Andrew; PHENEGER, Jed; SATOH, Yoshitaka; LEFTHERIS, Katerina; RAHEJA, Raj K.; BENNETT, Brydon L.; (223 pag.)WO2016/90285; (2016); A1;,
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116091-63-5, Adding a certain compound to certain chemical reactions, such as: 116091-63-5, name is 2-Methoxy-5-(2-oxopropyl)benzenesulfonamide, belongs to amides-buliding-blocks compound, can increase the reaction rate and produce products with better performance than those obtained under traditional synthetic methods. Here is a downstream synthesis route of the compound 116091-63-5.

a) 2-Methoxy-5-(2-oxopropyl)-benzene sulfonamide (37.3 gm, 153.3 mmol), 2-(2-ethoxyphenoxy)-1-ethanamine (29.8 gm, 164.4 mmol) and methanol (250 mL) were taken into a one liter stainless steel flask and mixed well. Catalyst Raney nickel (8 gm) was added to the flask and the mixture hydrogenated at 50 C. at hydrogen pressure of 40 psi for 30 hrs. The catalyst was removed by filtration and solvent from the filtrate was distilled off completely at 50 C. under vacuum. The dark brown crude obtained was treated with methanolic hydrochloric acid (175 mL) at 0-5 C. under stirring. Tamsulosin hydrochloride formed as a solid was filtered, washed with ethyl acetate (200 mL), suspended in methanol (120 mL) and the methanol slurry filtered to obtain off white solid material. It was dried for 3 hrs at 80 C. to give racemic tamsulosin hydrochloride. Melting point 255-257 C., chemical purity of 98.8 area % (by HPLC) and R,S ratio of 51.45:48.55 (by chiral HPLC).

According to the analysis of related databases, 116091-63-5, the application of this compound in the production field has become more and more popular.

Reference:
Patent; DIVI’S LABORATORIES LIMITED; US2006/79714; (2006); A1;,
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

627-12-3, Adding a certain compound to certain chemical reactions, such as: 627-12-3, name is Propyl carbamate, belongs to amides-buliding-blocks compound, can increase the reaction rate and produce products with better performance than those obtained under traditional synthetic methods. Here is a downstream synthesis route of the compound 627-12-3.

General procedure: CuI (10mol%) and EDA (10mol%) were added to a mixtureof O-alkyl carbamate (1mmol), NaOtBu (1.5mmol) and aryl halide (1mmol) in 2mL toluene and the mixture wasstirred for the appropriate time, which was determined byTLC monitoring, at 100C. After completion of the reaction,the catalyst was removed by filtration and 20mL H2Owas added to the filtrate. The resultant mixture was extractedwith CHCl3.Then the organic phase was washed with water(2 ¡Á 10mL) and dried over anhydrous Na2SO4.After evaporationof CHCl3under reduced pressure, the correspondingcrude product was purified by flash chromatography to givethe desired pure cross-coupling product in good to excellentyield. In the case of using arylboronic acids as couplingpartners, Cu(OAc)2 was employed instead of CuI.

In the field of chemistry, the synthetic routes of compounds are constantly being developed and updated. I will also mention this compound in other articles, Propyl carbamate, other downstream synthetic routes, hurry up and to see.

Reference:
Article; Sardarian, Ali Reza; DindarlooInaloo, Iman; Zangiabadi, Milad; Catalysis Letters; vol. 148; 2; (2018); p. 642 – 652;,
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

In the chemical reaction process, reaction time, type of solvent, can easily affect the result of the reaction, thereby determining the yield and properties of the reaction product. An updated downstream synthesis route of 631-58-3 as follows. 631-58-3

Into a solution of Compound 94 (145 mg, 0.33 mmol) in THF (10 mL) at 00 C was added phenyltrimethylammonium tribromide (125 mg, 0.33 mmol). The mixture was stirred at O 0 C for 1 hour, quenched by ice addition, extracted with methylene chloride. The combined extracted was dried (Na2SO4), filtered and concentrated to give crude 75a (200mg).Into a solution of 75a (52 mg, 0.1 mmol) in 3 mL of EtOH was added ethanethioamide (0.2 mmol) at room temperature. The resulting solution was stirred at room temperature for 4 hours. The solvent was removed under reduced pressure and the residue was taken up with ethyl acetate. The solution was treated with saturated solution of NaHCO3 and extracted with ethyl acetate. The combined extracts were dried (NaaSClambdai) and concentrated. Column chromatography on silica gel (eluted with 10-70% ethyl acetate in hexanes) gave Compound 95 (40 mg).1H NMR (300 MHz, CDCI3) 510.40 (brs, 1 H), 7.54-7.42 (m, 5H), 7.02 (t, J = 8.5Hz, 2H), 2.65 (s, 3H), 1.90 (s, 3H).MS (ESI) [M+H+]: 496.

According to the analysis of related databases, 631-58-3, the application of this compound in the production field has become more and more popular.

Reference:
Patent; SYNTA PHARMACEUTICALS CORP.; WO2007/87427; (2007); A2;,
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

Researchers who often do experiments know that organic synthesis is a process of preparing more complex target molecules from simple raw materials through one or more chemical reactions. Generally, it requires fewer steps, and cheap raw materials. 630-22-8, name is 2,2-Dimethylpropanethioamide, A new synthetic method of this compound is introduced below., 630-22-8

at room temperature, to dimethylacetamide (35mL) in a (3- (2- (t-butyl) -5- (2-chloro-pyrimidin-4-yl) thiazol-4-yl) -2-fluorophenyl ) allyl carbamate (3.21g, 9.18mmol, 1.0eq.) was added N- succinimide (1.64g, 9.21mmol, 1.0eq.).When LCMS showed complete disappearance of the starting material, 2,2,2-trimethoxy thio acetamide (1.3g, 11.1mmol, 1.2eq.) And the reaction was heated overnight at 60 deg.] C.LCMS showed the reaction was complete.The reaction was poured into water (250mL), and extracted with ethyl acetate content.Extract was dried over sodium sulfate, filtered, and concentrated under reduced pressure.With 20% ethyl acetate / heptane, silica gel chromatography (300g, 3 “diameter column) to give the crude product, in the form of an oil to provide (3- (2- (t-butyl) -5- (2- chloro-pyrimidin-4-yl) thiazol-4-yl) – 2-fluorophenyl) allyl carbamate (2.92g, 70% yield)

The basis of chemical reaction formula synthesis, the synthesis route is composed of some specific reactions and combined according to certain logical thinking. We look forward to the emergence of more reaction modes in the future.

Reference:
Patent; Pulaixike Company; Zhang, Chao; Ibrahim, Prabha N; Nespi, Marika; Shi, Songyuan; Spevak, Wayne; Habets, Gaston G; Burton, Elizabeth A; Hirth, Klaus-Peter; (181 pag.)CN105228983; (2016); A;,
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

627-12-3, These common heterocyclic compound, 627-12-3, name is Propyl carbamate, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route.

General procedure: CuI (10mol%) and EDA (10mol%) were added to a mixtureof O-alkyl carbamate (1mmol), NaOtBu (1.5mmol) and aryl halide (1mmol) in 2mL toluene and the mixture wasstirred for the appropriate time, which was determined byTLC monitoring, at 100C. After completion of the reaction,the catalyst was removed by filtration and 20mL H2Owas added to the filtrate. The resultant mixture was extractedwith CHCl3.Then the organic phase was washed with water(2 ¡Á 10mL) and dried over anhydrous Na2SO4.After evaporationof CHCl3under reduced pressure, the correspondingcrude product was purified by flash chromatography to givethe desired pure cross-coupling product in good to excellentyield. In the case of using arylboronic acids as couplingpartners, Cu(OAc)2 was employed instead of CuI.

Chemical properties determine the actual use. Each compound has specific chemical properties and uses. We look forward to more synthetic routes in the future to expand reaction routes of 627-12-3.

Reference:
Article; Sardarian, Ali Reza; DindarlooInaloo, Iman; Zangiabadi, Milad; Catalysis Letters; vol. 148; 2; (2018); p. 642 – 652;,
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

1943-79-9, As we all know, there are many different methods for the synthesis of a compound, and people can choose the synthesis method that suits their own laboratory according to the actual situation. 1943-79-9 name is Phenyl methylcarbamate, This compound is widely used in many fields, so it is necessary to find a new synthetic route. The downstream synthesis method of this compound is introduced below.

EXAMPLE 10 Synthesis of N-methyl-N’-phenyl urea: 15.1 g. of phenyl N-methylcarbamate, 9.3 g. of aniline and 5.4 g. of the tetraethylammonium salt of 2-hydroxy-5-nitro-pyridine are refluxed in 200 ml. of ethanol for 5 hours. The reaction solution is concentrated, and the residue is dissolved in 100 ml. of chloroform, washed successively with 50 ml. of 1N sodium carbonate, 50 ml. of 1N hydrochloric acid and 100 ml. of water, and dried. By concentrating to dryness and recrystallizing from 120 ml. of ethanol, crystals of N-methyl-N-phenylurea having a m.p. of 150 – 151C. are obtained in 91% yield. When phenyl N-methyldithiocarbamate is used in place of phenyl N-methylcarbamate, N-methyl-N’-phenylthiourea is obtained in 79% yield, m.p. 113C. In either case, the reaction rate is considerably lower without the catalyst than with the catalyst.

The basis of chemical reaction formula synthesis, the synthesis route is composed of some specific reactions and combined according to certain logical thinking. We look forward to the emergence of more reaction modes in the future.

Reference:
Patent; Kyowa Hakko Kogyo Co., Ltd.; US3963728; (1976); A;,
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

A common heterocyclic compound, 108468-00-4, name is 1-(N-Boc-aminomethyl)-4-(aminomethyl)benzene, molecular formula is C13H20N2O2, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route. 108468-00-4.

General procedure: A solution of 4-(Boc-aminomethyl)benzylamine (3) (1.0 mmol) and TEA (3.0 mmol) in anhydrous DCM (8 mL) was cooled with an ice bath, then the corresponding sulfochloride (1.1 mmol, dissolved in 2 mL anhydrous DCM) was added dropwise. The reaction mixture was allowed to stir at 0 C for 1 h. After removing the cooling bath, the resulting mixture was stirred for 5 h at room temperature, then diluted with saturated aqueous NaHCO3 and extracted with DCM (10 mL) for three times. The combined organic layer was sequentially washed with water and brine, dried with anhydrous Na2SO4, and concentrated in vacuo. The crude was purified by column chromatography with DCM/methanol (150:1, v/v) to give the product as a white solid.

The synthetic route of 1-(N-Boc-aminomethyl)-4-(aminomethyl)benzene has been constantly updated, and we look forward to future research findings.

Reference:
Article; Bai, Renren; Liang, Zhongxing; Yoon, Younghyoun; Salgado, Eric; Feng, Amber; Gurbani, Saumya; Shim, Hyunsuk; European Journal of Medicinal Chemistry; vol. 136; (2017); p. 360 – 371;,
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

7341-96-0, The chemical industry reduces the impact on the environment during synthesis 7341-96-0, name is Propiolamide, I believe this compound will play a more active role in future production and life.

The imine (0.2mmol), rhodium acetate (0.002mmol), Molecular sieve (300 mg) and the mixture is dissolved 1.5 ml dichloromethane solvent, into mixed solution 1, in 20 C stirring for 10 minutes. Then the propargyl amide (0.24mmol) and phenyl diazonium acetic acid methyl ester (0.24mmol) dissolved in 1.0 ml methylene chloride solvent, into solution 2. The solution 2 for 20 C lower, in 1 hour for adding and mixing the solution in the injection pump 1. The reaction mixture is purified by rapid column chromatography, to obtain the pure product, its structure is formula (b) is shown. The yield is 87%, dr value is equal to the 89:11.

The chemical industry reduces the impact on the environment during synthesis Propiolamide. I believe this compound will play a more active role in future production and life.

Reference:
Patent; EAST CHINA NORMAL UNIVERSITY; HU, WENHAO; WU, YONG; WANG, WENKE; TANG, MIN; (29 pag.)CN106146334; (2016); A;,
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics