New facile synthesis of α-hydroxyamides: Intermolecular and intramolecular catalysis in the reaction of α-hydroxycarboxylic acids with N-sulfinylamines.
作者:Jai Moo Shin、Yong Hae Kim
DOI:10.1016/s0040-4039(00)84412-3
日期:1986.1
α-Hydroxycarboxylic acids () reacted with N-sulfinylanilines () to give the corresponding α-hydroxyanilides () in quantitative yields under mild condition: the reaction appears to involve intermolecular catalysis by the carboxylic acid moiety and intramolecular catalysis by the hydroxyl group.
The present invention relates to a moisture-proof material having a polyurethane film substrate and an adhesive layer formed on at least one surface of the substrate, which material shows a tensile strength of not less than 7500psi, and an elongation at break of not less than 550%.