Patent ID: 7531619

Claim:
A method for producing a dendrimer having a structural repeating unit which is represented by formula (1) and which contains a linear portion including a thienylene moiety and a branch portion Y formed of an optionally substituted trivalent organic group, the method being based on the convergent method, characterized in that the method comprises reaction step 1 of converting α-position hydrogen of the thiophene ring of a thienylene-moiety-containing compound (a) for forming end moieties to an active group V 1 which undergoes Suzuki cross-coupling reaction, to thereby form compound (b); reaction step 2 of subjecting a compound (c) to Suzuki cross-coupling reaction with the compound (b) to thereby yield compound (d), the compound (c) having a linear portion and a branch portion Y and having, at the branch portion Y, two active groups V 2 which undergo Suzuki cross-coupling reaction with the active group V 1 reaction step 3 of converting α-position hydrogen of the thiophene ring of the thus-formed compound to an active group V 1 which undergoes Suzuki cross-coupling reaction, and reacting the compound (c) with the active group V 2 , to thereby form a dendron of a subsequent generation; and a step of repeating the reaction step 3 in accordance with needs, to thereby form a dendrimer: (wherein Z represents a single bond or an optionally substituted divalent organic group having no active group; each of R 1 and R 2 is selected from among a hydrogen atom, an alkyl group, and an alkoxy group; Y represents an optionally substituted trivalent organic group; Y 1 is identical to Y or represents an organic group having a skeleton identical to that of Y; W may be absent or represents an optionally substituted monovalent organic group having no active group; m is an integer of 0 or more; and each of V 1 and V 2 serving as active groups is selected from active groups which undergo Suzuki cross-coupling reaction, V 1 and V 2 being able to be mutually cross-coupled, and wherein V 1 is —B(OH) 2 and V 2 is —Br).