Patent ID: 7807755

Claim:
A process for replacing a functional group, —SC(S)X, with —H, comprising contacting a polymer containing a functional group, —SC(S)X with a salt of hypophosphorous acid and a radical initiator, wherein X is R, OR 1 , N(R 2 ) 2 , SR 3 , or P(O)(OR 4 ) 2 ; R is substituted or unsubstituted C 1 -C 25 alkyl; substituted or unsubstituted C 2 -C 25 alkenyl; substituted or unsubstituted C 2 -C 25 alkynyl; substituted or unsubstituted phenyl; substituted or unsubstituted naphthyl; and substituted or unsubstituted benzyl; and R 1 , R 2 , R 3 , and R 4 are substituted or unsubstituted C 1 -C 25 alkyl; substituted or unsubstituted C 6 -C 10 aryl; a 3- to 8-membered carbocyclic or heterocyclic ring, or N(R 2 ) 2 is a 3- to 8-membered heterocyclic ring.