THE SYNTHESIS OF HEMOPYRROLE-DICARBOXYLIC ACID AND OF SOME DIPYRROMETHENES
作者:S. F. MacDonald、R. J. Stedman
DOI:10.1139/v55-056
日期:1955.3.1
The pyrrole IIe was obtained through the known IIc and hydrolyzed to IIIb. This last could be partially decarboxylated to hemopyrrole-dicarboxylic acid IIIc or, with formic acid, converted into the...
Palladium-catalysed fragmentary esterification-induced allylic alkylation of allyl carbonates and cyclic vinylogous anhydrides
作者:Shu-Yi Wu、Yang Li、Peng Shen、Xin-Han Yang、Guang-Yao Ran
DOI:10.1039/d3cc05758e
日期:——
An unprecedented palladium-catalysed fragmentary esterification-induced allylic alkylation (FEAA) of cyclic vinylogous anhydrides (CVAs) and allyl carbonates has been disclosed. The protocol features broad sp3-rich scaffold tolerance, rendering highly functionalized 1,6 and 1,7-dicarbonyls in up to high yields and diastereoselectivities. Three-component FEAA is also well tolerant to generate 1,6-dicarbonyls