METHOD FOR THE PRODUCTION OF BIFUNCTIONAL STYLE CONNECTIONS THAT ENHANCING THE STYLE ENVIRONMENT THROUGHOUT FROM THE STYLE ENVIRONMENT THROUGHOUT

摘要

Bifunctional stilbene compounds containing at least one stilbene group having the Z configuration, of the formula …IMAGE… are prepared by reacting compounds of the formula …IMAGE… with an acetylene of the formula… HC IDENTICAL C-R4 (III),… in the presence of a palladium catalyst and of a base at temperatures of 30 to 160 DEG C, converting the resulting compounds in the presence of a base into compounds of the formula …IMAGE… then reacting the compounds of the formula (IV) with compounds of the formula …IMAGE… in the presence of a palladium catalyst and of a base at temperatures of from 30 to 160 DEG C, then reducing the resulting acetylene compounds in the presence of catalysts using hydrogen or using other reducing agents to give Z-stilbene compounds of the formula …IMAGE… and converting the functional groups D and D1 into the above-mentioned functional groups Z and Y of the formula (I) in a known manner… or… reacting the Z-stilbene compounds of the formula (VI) in the case where D and D1 at least stand for one bromine atom, with compounds of the formula… H2C=CHR7 (VII),… in the presence of a palladium catalyst and of a base at temperatures of 30 to 160 DEG C and converting the functional groups D, D1 and D2 into the functional groups Z and Y of the formula (I) in a customary manner… or… reacting the compounds of the formula (IV) with compounds of the formula …IMAGE… in the presence of a palladium catalyst and of a base at temperatures of 30 to 160 DEG C, then reducing the resulting acetylene compounds to corresponding Z-stilbene compounds in the presence of catalysts using hydrogen or using other reducing agents and then converting the functional groups D into the functional groups Z and Y of the formula (I) in a known manner.