Reactions of tetrafluoroethene oligomers Part XII [1] cycloaddition reactions of 3,3,4,4,4-pentafluoro-2-pentafluoroethyl-2-trifluoromethyldiazobutane. A novel synthesis of pyrazoles
作者:Paul L. Coe、Michael I. Cook
DOI:10.1016/s0022-1139(00)82868-7
日期:1989.12
diazoalkane (1) reacts smoothly with a variety of electron deficient alkenes to give, unexpectedly, the corresponding pyrazole derivatives. Thus, reaction with methyl or ethyl propenoate affords the methyl and ethyl esters of pyrazole-3-carboxylic acid (2) and (3). Reaction with diethyl maleate yields 3,4-bis-(ethoxycarbonyl>pyrazole (4), and dimethyl maleate gives the corresponding dimethyl ester (5). Treatment
FIRE EXTINGUISHING AND FIRE SUPPRESSION COMPOSITIONS COMPRISING UNSATURATED FLUOROCARBONS
申请人:E I DU PONT DE NEMOURS AND COMPANY
公开号:US20130037279A1
公开(公告)日:2013-02-14
Disclosed herein are flame suppression compounds and methods of use thereof. The compounds include unsaturated fluorocarbons appropriate for use in fire protection applications.
Fire extinguishing and fire suppression compositions comprising unsaturated fluorocarbons
申请人:E. I. du Pont de Nemours and Company
公开号:EP2412410A2
公开(公告)日:2012-02-01
Disclosed herein are flame suppression compounds and methods of use thereof. The compounds include unsaturated fluorocarbons appropriate for use in fire protection applications.