公开(公告)号：DK326975A

公开(公告)日：1976-01-19

申请号：DK326975

申请日：1975-07-17

Applicant: HOECHST AG

Inventor： SCHMIDT E ,  CLAUSS K ,  PIETSCH ,  JENSEN H

IPC: C07C307/00 ,  C07C67/00 ,  C07C301/00 ,  C07C303/00 ,  C07D205/08 ,  C07D291/06 ,  C07C

Abstract: Compounds of the formula +q,10 IN WHICH R represents an alkyl radical having from 1 to 4 carbon atoms and Hal stands for fluorine or chlorine are prepared by reacting at a temperature of from -40 DEG to +20 DEG C an i-propenylalkanoic acid ester of the formula CH ¦ R-C(O)-O-C=CH2 (IV) with an isocyanate of the formula O=C=N-SO2Hal(V) in which R and Hal have the same meaning as above, and isolating the compound of formula III.