Boron ester fused thiophene monomers

摘要

A compound of formula (I), formula (II), or a combination thereof, and salts thereof is described.;
Each A may be independently an optionally substituted conjugated species or an optionally substituted aromatic species. Each R may be independently an optionally substituted C1-C40 linear alkyl chain, an optionally substituted branched alkyl chain, an optionally substituted alkyl chain containing heteroatoms, substituted alkyl chains, or H. Each R2 may be independently an optionally substituted C1-C40 linear alkyl chain, an optionally substituted branched alkyl chain, an optionally substituted alkyl chain containing heteroatoms, substituted alkyl chains, H, or part of a cyclic boronate ester with an other R2. Each n may be independently less than or equal to 3 and greater than or equal to 1. Each x may be independently less than or equal to 3.

主权项

1. A method of making a compound of formula (I) and salts thereof,the method comprising:
reacting a compound of formula (III)with an alkyl lithium to give an intermediate; and
reacting the intermediate with a compound of formula (IV)to give the compound of formula (I),
wherein each A is independently an optionally substituted conjugated species or an optionally substituted aromatic species, wherein each R and R3 is independently an optionally substituted C1 -C40 linear alkyl chain, an optionally substituted branched alkyl chain, an optionally substituted alkyl chain containing heteroatoms, substituted alkyl chains, or H, wherein each R2 is independently an optionally substituted C1-C40 linear alkyl chain, an optionally substituted branched alkyl chain, an optionally substituted alkyl chain containing heteroatoms, substituted alkyl chains, H, or part of a cyclic boronate ester with another R2, wherein each n is independently less than or equal to 3 and greater than or equal to 1, and wherein each x is independently less than or equal to 3.