Regioselective alkylation of 2-trimethylsiloxyfuran; direct access to 4-substituted but-2-en-4-olides
作者:Charles W. Jefford、Adam W. Sledeski、John Boukouvalas
DOI:10.1039/c39880000364
日期:——
Primary iodides alkylate 2-trimethylsiloxyfuran in the presence of a molar excess of silver trifluoroacetate to give the 4-alkylbut-2-en-4-olides in 55–81% yield; as an illustration of the method, the cytotoxic marine sponge constituent, 4-(methoxycarbonylmethyl)but-2-en-4-olide was prepared in 79% yield in one step.