Abstract A number of alkyl, aryl and bifunctional isothiocyanates are obtained in moderate to high yields (41–94%) in a two-step, one-pot reaction of the parent primary amines or their salts with carbondisulfide, followed by reaction of the thus formed dithiocarbamates with T3P® (propane phosphonic acid anhydride) as a new and efficient desulfurating agent. A number of alkyl, aryl and bifunctional isothiocyanates
Two-Carbon Homologation of Grignard Reagents to Primary Amines
作者:Krystyna Osowska-Pacewicka、Andrzej Zwierzak
DOI:10.1055/s-1996-4213
日期:1996.3
A novel, convenient synthesis of N-(diethoxyphosphoryl)aziridine is described. Application of this compound as a synthetic equivalent of an a2 type synthon for aminoethylation of Grignard reagents is demonstrated.
[EN] SELECTIVE VALORIZATION OF BIOMASS SUGARS<br/>[FR] VALORISATION SÉLECTIVE DE SUCRES DE BIOMASSE
申请人:MASSACHUSETTS INST TECHNOLOGY
公开号:WO2021127642A1
公开(公告)日:2021-06-24
Disclosed are methods of forming an epimer or a dehydrated isomer of a pyranose monosaccharide or a pyranose saccharide residue in an oligosaccharide or a glycoside.
[EN] SYNTHESIS OF STERICALLY HINDERED SECONDARY AMINOETHER ALCOHOLS<br/>[FR] SYNTHESE D'ALCOOLS AMINOÉTHER SECONDAIRES A ENCOMBREMENT STERIQUE
申请人:EXXONMOBIL RES & ENG CO
公开号:WO2005082835A1
公开(公告)日:2005-09-09
Severely sterically hindered secondary aminoether alcohols are prepared by reacting organic carboxylic, organic carboxylic acid halides, acid anhydrides or a ketene with an alkyl, alkaryl or alkylhalo sulfonate to yield a sulfonic. Carboxylic anhydride compound which is then reacted with a dioxane to cleave the ring of the dioxane, yielding a cleavage product which cleavage product is then aminated with an alkylamine and hydrolyzed with base to yield the severely sterically hindered secondary aminoether alcohol.