Addition of a carbamoylsilane to N-sulfonylimines: direct synthesis of α-(N-sulfonyl)amino-N-methoxymethyl-N-methylamides
摘要:
N-Methoxymethyl-N-methylcarbamoyl(trimethyl)silane reacted with N-sulfonylimines in anhydrous benzene under catalyst-free conditions to afford alpha-(N-sulfonyl)amino-N-methoxymethyl-N-methylamides in good to excellent yields (71-95%). Furthermore, after acid hydrolysis at room temperature, the corresponding alpha-(N-sulfonyl)amino secondary amides can be formed. (C) 2015 Elsevier Ltd. All rights reserved.
Reaction of activated 2,2-dimethylaziridines with Grignardreagents RMgHal in boiling THF can yield the products of normal aziridine ring opening, the rearranged opening products , and the methallylamides (isomers of ). The product distribution depends on R, Hal, and experimental conditions, and very strongly on the nature of the activating group A. It is shown that is opened (reversibly for A = sulfonyl)
A practical synthesis of N-tosylimines of arylaldehydes
作者:Ka Young Lee、Chang Gon Lee、Jae Nyoung Kim
DOI:10.1016/s0040-4039(02)02809-5
日期:2003.2
Synthesis of N-tosylimines of arylaldehydes was carried out by the reaction of arylaldehydes and p-toluenesulfonamide in methylene chloride in the presence of trifluoroacetic anhydride as a dehydrating agent.
申请人:Sanford Burnham Prebys Medical Discovery Institute
公开号:US10626096B2
公开(公告)日:2020-04-21
The present invention relates to a novel azole derivative as an apelin receptor agonist and a method for treating cardiovascular disease, diabetic disease, renal disease, hypertension, and arteriosclerosis, etc., using the same. The present invention provides a compound represented by formula (I) or a pharmacologically acceptable salt thereof wherein X1 represents —NH═ or —CH═, X2 represents —CH═ or —N═, R1 and R2 each represent a C1 to C6 alkoxy group or the like, R3 represents a heteroaryl group (the heteroaryl group is optionally substituted by a methyl group or the like) or the like, and R4 represents a C1 to C6 alkylthio group or a C2 to C6 alkenyl group (the C1 to C6 alkylthio group and the C2 to C6 alkenyl group are each optionally substituted by one carboxy group or the like) or the like.
Nucleophilic trifluoromethylation with organoboron reagents
作者:Vitalij V. Levin、Alexander D. Dilman、Pavel A. Belyakov、Marina I. Struchkova、Vladimir A. Tartakovsky
DOI:10.1016/j.tetlet.2010.11.025
日期:2011.1
Potassium trialkoxy(trifluoromethyl)borates are shown to behave as convenient reagents for nucleophilic trifluoromethylation of non-enolizable aldehydes and N-tosylimines to give CF3-substituted alcohols and N-tosylamines in good yields. (C) 2010 Elsevier Ltd. All rights reserved.