Patent ID: 7045547

Claim:
A compound of formula I, which includes a 3,4-dienoyl allene moiety of formula I wherein A is SR 3 ; R 1 is hydrogen, halogen, nitrile, (C 1 –C 4 )alkyl, (C 2 –C 4 )alkenyl, and (C 2 –C 4 alkynyl, and (C 3 –C 5 )cycloalkyl; R 2 and R 3 is independently selected from (C 1 –C 16 )alkyl, (C 2 –C 16 )alkenyl, (C 2 –C 16 )alkynyl, (C 3 –C 16 )heteroalkyl, (C 3 –C 7 )cycloalkyl and (C 3 –C 7 )heterocycle, and wherein the (C 1 –C 16 )alkyl, (C 2 –C 16 )alkenyl, (C 2 –C 16 )alkynyl, (C 3 –C 16 )heteroalkyl, (C 3 –C 7 )cycloalkyl and (C 3 –C 7 )heterocycle is optionally substituted with one or more groups selected from halogen, nitrile, hydroxy, amino, alkoxy, aryl and (C 3 –C 6 )cycloalkyl, wherein R 1 and R 2 are not the same.