The synthesis of a series of 20 new 2,4,6-tristyrylpyrimidines and three new 2,4-distyrylpyrimidines by means of combination of Knoevenagel condensation and Suzuki–Miyaura cross-coupling reaction is reported. This methodology enables us to obtain chromophores with identical or different substituent on each arm. The photophysicalproperties of the compounds are described. Optical properties and time-dependent
Suzuki−Miyaura Cross-Coupling Reactions of Potassium Alkenyltrifluoroborates
作者:Gary A. Molander、Carmem R. Bernardi
DOI:10.1021/jo026236y
日期:2002.11.1
that the palladium-catalyzedcross-couplingreaction of air-stable potassium alkenyltrifluoroborates with aryl halides and triflates proceeds readily with good yields. Recent progress in outlining the scope and limitations of such reactions is described herein. The palladium-catalyzedcross-couplingreaction of potassium alkenyltrifluoroborates with aryl and heteroaryl halides and triflates proceeds