3-diarylpropenes were synthesized in good to high yields by the palladium-catalyzedallylicarylation of allylicethers, such as a cinnamyl phenyl ether, with a variety of arylboronicacidsusing a hydrazone 1a–Pd(OAc)2 system in DMAc/H2O. Using this catalyst, eugenol was also synthesized from allyl phenyl ether with (4-hydroxy-3-methoxyphenyl)boronic acid pinacol ester.
Transition metal-free reductive coupling of allylic sulfonylhydrazones with aryl boronic acids for C(sp<sup>3</sup>)–C(sp<sup>2</sup>) bond formation
作者:Kasim Ali、Gurudayal Prajapati、Ravi Sankar Ampapathi、Gautam Panda
DOI:10.1039/d2ob01472f
日期:——
The reductive coupling between allylic sulfonylhydrazones and aryl boronic acids gives 1,3-diarylpropene systems with good to excellent yields. Simple reaction conditions, high yields, and good functional group tolerance are the salient features of this reaction which takes place without using any transition-metal catalysts and an inert atmosphere. The substituents on aryl boronic acid or allylic sulfonylhydrazone