NEW MATERIAL:2-Arylnaphtho[1,8-bc]furan-5-ones expressed by formaula I: (G is trifunctional residuce derived from benzene or naphthalene ring; R1 and R2 are 1W5C alkyl, 1W3C alkoxyl, halogen or H; however, except where G is benzene ring and R1 and R2 are H together).
EXAMPLE: 2-(3,5-Dimethyl phenyl)naphtho[1,8-bc]-furan-5-one.
USE: Photopolymerization initiators for addition-polymerizable ethylenic compounds capable of giving photopolymerizable compositions having high sensitivity and thermal stability.
PROCESS: Compounds of formula II: (Q is halogen, 1-5C alkyl, alkyl substituted aminoalkylene; e is an integer 1W5; however, except 4,8-substitution product) are reacted with compounds of formula III: (R3 and R4 are the same as R1 and R2) in the presence of zinc chloride under heating to give the objective compounds of formula I
KONDOU SHIYUNICHI
MATSUFUJI AKIHIRO
ONO HISATAKE
UCHIDA TOSHIO
