Patent ID: 7977491
Filing Date: 2011-07-12
Classification: C07C,C07D,C08G

Abstract:
1. A dendron, having, as a recurring unit of each branch, a structure represented by formula (I): wherein TC designates a linkage to a former generation in the direction to a focal point of the dendron; TT's each designate a linkage to a next generation in the direction to a terminal of the dendron; X is —S—, —SO—, or —SO 2 —; L 1 and L 2 's each independently represent a divalent linking group selected from the group consisting of —CH 2 —, —CH 2 CH 2 —, —CH 2 CH 2 CH 2 —, 1,2-phenylene, 1,3-phenylene, 1,4-phenylene, α,2-tolylene, α,3-tolylene, α,4-tolylene, o-xylylene, m-xylylene, p-xylylene, and a divalent group wherein any one of these divalent groups is combined with —O—, —S—, —P═O(R 1 )—, —N(R 1 )—, —CO—, —SO—, —SO 2 — or —Si(R 1 )(R 2 )— wherein R 1 and R 2 each independently represents a hydrogen atom or a substituent; R represents a hydrogen atom; and in the recurring units, X's may be the same or different, L 1 's may be the same or different, and L 2 's may be the same or different, wherein the dendron has a focal point selected from the group consisting of a chain or cyclic saturated hydrocarbon, a chain or cyclic unsaturated hydrocarbon, an aromatic hydrocarbon, a non-aromatic heteroring, an aromatic heteroring, and the focal point may have a substituent selected from the group consisting of a mercapto group, a hydroxyl group, a cyano group, a nitro group, a halogen atom, a hydrazino group, an azo group, an isocyanato group, an isothiocyanato group, a thiocyanato group, a carboxyl group, a sulfo group, an acyl group, a formyl group, an alkoxycarbonyl group, a carbamoyl group, a sulfamoyl group, an alkoxysulfonyl group, a sulfonyl group, an amino group, an acylamino group, a sulfonylamino group, a sulfenyl group, a sulfinyl group, an alkoxy group, an alkyl group, an alkenyl group, an alkynyl group, an aryl group, a silyl group, a silyloxy group, and a heterocyclic group and the dendron has a generation number of from 2 to 20.