Patent ID: 6958145

Claim:
A method for the dehydrohalogenation of a compound of formula IV: wherein R 2 is independently H, halogen, alkyl, alkoxy, oxoalkyl, alkenyl, aryl or arylalkyl whether unsubstituted or substituted, straight chain or branched chain, hydrophilic or fluorophilic; R 4 is selected from halogen, OH and Oalkyl; R 5 are halogen; R 1 and R 3 are independently or both hydrogen or halogen; and “ ” is a single bond or double bond, to prepare a compound of formula V wherein R 2 is a H, alkyl, alkoxy, oxoalkyl, alkenyl, aryl or arylalkyl whether unsubstituted or substituted, straight chain or branched chain, hydrophobic, hydrophilic or fluorophilic; R 4 is a halogen; R 1 and R 3 are independently or both hydrogen or halogen; the method comprising contacting a compound of formula IV with a base.