N-(p-toluenesulfonyl)imidazole in the presence of triethylamine in DMF at 100 °C afforded the corresponding amides in good to excellent yields. N-(p-Toluenesulfonyl)imidazole proved to be a highly efficient coupling reagent for the preparation of numerous structurally diverse primary, secondary and tertiary amides.
在三乙胺的存在下,在 DMF 中,在 100 °C 下用 N-(对甲苯磺酰基)咪唑处理羧酸铵,得到相应的酰胺,收率良好至极好。N-(对甲苯磺酰基)咪唑被证明是一种高效的偶联剂,可用于制备多种结构不同的伯、仲和叔酰胺。
Inhibitors of p38-a kinase
申请人:——
公开号:US20020115671A1
公开(公告)日:2002-08-22
The invention is directed to prepare medicaments for treatment of and to methods to treat conditions mediated by kinase using compounds of the formula
1
wherein Ar
1
and Ph are limited to specific embodiments or wherein the compound of formula (3) is a compound set forth in FIGS.
1
A-
1
I.
Electrochemical Amidation: Benzoyl Hydrazine/Carbazate and Amine as Coupling Partners
作者:Tipu Alam、Amitava Rakshit、Hirendra Nath Dhara、Angshuman Palai、Bhisma K. Patel
DOI:10.1021/acs.orglett.2c02626
日期:2022.9.16
An electrochemical amidation of benzoyl hydrazine/carbazate and primary/secondary amine as coupling partners via concomitant cleavage and formation of C(sp2)–N bonds has been achieved. This methodology proceeds undermetal-free and exogenous oxidant-free conditions producing N2 and H2 as byproducts. Mechanistic studies reveal the in situ generations of both acyl and N-centered radicals from benzoyl
通过伴随的裂解和 C(sp 2 )-N 键的形成,实现了苯甲酰肼/咔巴酸酯和伯/仲胺作为偶联伙伴的电化学酰胺化。该方法在无金属和无外源氧化剂的条件下进行,产生 N 2和 H 2作为副产物。机理研究揭示了来自苯甲酰肼和胺的酰基和N中心自由基的原位生成。该协议的实用性通过大规模合成苯扎贝特(一种高脂血症药物)得到证明。
Reductive cleavage of resin bound arylsulfonates
作者:Shujuan Jin、David P Holub、David J Wustrow
DOI:10.1016/s0040-4039(98)00640-6
日期:1998.5
A 4-hydroxybenzoate was tethered to a solid support via an arylsulfonate bond. The carboxylate functionality was converted to a variety of esters and amides. The products were then liberated from the resin by Pd(0) catalyzed reductive cleavage of the arylsulfonate oxygen. (C) 1998 Elsevier Science Ltd. All rights reserved.
USE OF PIPERIDINES AND/OR PIPERAZINES AS INHIBITORS OF P38-ALPHA KINASE