Candida antarctica lipase A in the dynamic resolution of novel furylbenzotiazol-based cyanohydrin acetates
摘要:
A series of novel (R)-furylbenzotiazol-based cyanohydrin acetates were prepared in over 90% isolated yields from the corresponding furancarbaldehydes. The one-pot method combines a basic resin to produce hydrogen cyanide from acetone cyanohydrin, an equilibrium between the formation and decomposition of furylbenzotiazol-based cyanohydrins and the unique enantioselectivity of Candida antarctica lipase A, allowing the acylation of (R)-cyanohydrins in the presence of vinyl acetate in anhydrous acetonitrile. (C) 2003 Elsevier Science Ltd. All rights reserved.
Direct Amidation of Carboxylic Acids with Nitroarenes
作者:Shao-Peng Wang、Chi Wai Cheung、Jun-An Ma
DOI:10.1021/acs.joc.9b02068
日期:2019.11.1
N-Aryl amides are an important class of compounds in pharmaceutical and agrochemical chemistry. Rapid and low-cost synthesis of N-aryl amides remains in high demand. Herein, we disclose an operationally simple process to access N-aryl amides directly from readily available nitroarenes and carboxylicacids as coupling substrates. This method involves the in situ activation of carboxylicacids to acyloxyphosphonium
Potassium Carbonate Promoted C–N Coupling Reaction between Benzamides and Aryl Iodides
作者:Songlin Zhang、Fei Huang、San Wu、Weiye Hu
DOI:10.1055/s-0036-1591843
日期:2018.3
benzamides promoted by potassium carbonate in the presence of DMEDA was developed. The reaction was carried out without addition of any transition-metal catalyst to afford a variety of N-arylated products in moderate to good yields (up to 97%). A practical and efficient method for N-arylation of benzamides promoted by potassium carbonate in the presence of DMEDA was developed. The reaction was carried out
The present invention is directed to pyridazinone compounds of formula (I) and furan compounds of formula (II), pharmaceutical compositions of compounds of formula (I) and (II), kits containing these compounds, methods of syntheses, and a method of treatment of a proliferative disease in a subject by administration of a therapeutically effective amount of a compound of formulae (I) or (II). Both classes of compounds were identified through screening of a collection of small molecule libraries.