Sulfur-Assisted Five-Cascade Sequential Reactions for the Convenient and Efficient Synthesis of Allyl Thiophen-2-yl Acetates, Propionates, and Ketones
作者:Hongwei Zhou、Yongfa Xie、Lianjun Ren、Rui Su
DOI:10.1021/ol902690h
日期:2010.1.15
A sulfur-assisted five-cascade sequential reaction, wherein the in situ-generated allenyl allyl sulfides undergo thio-Claisenrearrangement, intramolecular Michael addition, and 1, 5-proton migration/aromatization to obtain allyl thiophen-2-yl acetates, propionates, and ketones as the final products, was reported. As a result of the ready availability of starting materials and the extremely simple