Substituted o-phthalaldehydes

Details Substituted o-phthalaldehydes Substituted o-phthalaldehydes

C - Chemistry, Metallurgy

07

F

260/434, 260/446

C07F 7/08 (2006.01) C07F 7/22 (2006.01) C07F 7/30 (2006.01) C08G 2/00 (2006.01) G03F 7/039 (2006.01) G03F 7/075 (2006.01)

Patent

CA 1272205

Substituted o-phthalaldehydes Abstract of the Disclosure There are disclosed novel substituted o-phthalaldehydes of formula I Image (I), wherein at least one of the substituents R1, R2, R3, R4 is Q(alkyl)3, -CH2-Q(alkyl)3, -O-Q(alkyl)3, -Q(aryl)3 or -Q(alkylene- aryl)3, wherein Q is Si, Sn or Ge, the alkyl moieties contain 1 to 12 carbon atoms, the aryl groups contain 6 or 12 ring carbon atoms and the alkylene radicals contain 1 to 4 carbon atoms, and each of the remaining substituents R1 to R4 is a hydrogen or halogen atom or a cyano, nitro, carboxyl or hydroxyl group, a C1-C4alkoxy, C1-C4alkyl- thio or an alkoxycarbonyl group containing 1 to 4 carbon atoms in the alkoxy moiety. The novel o-phthalaldehydes can be polymerised to give polymers that can be used as photoresists.

527282

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