Synthesis of substituted 3-furan-2(5H)-ones via an anthracene Diels–Alder sequence
作者:Simon Jones、Ian Wilson
DOI:10.1016/j.tetlet.2006.04.097
日期:2006.6
Deprotonation then electrophilic quench of the lactone derived from the Diels–Alder addition adduct of anthracene and maleicanhydride gave α-substituted lactones in good yield. Of particular note was the reaction with chlorotrimethylsilane which gave only the C-silylated product. Flash vacuum pyrolysis (FVP) of the alkylated products afforded 3-substituted furan-2(5H)-ones in good overall yield.
Development of a Method for the Synthesis of a-Substituted a,b-Unsaturated Lactones Based on Stille-Type Pd-catalyzed Carbonylation of (Z)-w-Iodoalkenols. An Efficient and Selective Synthesis of (+)-Hamabiwa-lactone B
作者:Ei-ichi Negishi、Baiqiao Liao
DOI:10.3987/com-99-s138
日期:——
General, Regiodefined Access to α-Substituted Butenolides through Metal−Halogen Exchange of 3-Bromo-2-silyloxyfurans. Efficient Synthesis of an Anti-inflammatory Gorgonian Lipid
作者:John Boukouvalas、Richard P. Loach
DOI:10.1021/jo8015924
日期:2008.10.17
A variety of alpha-substituted butenolides were efficiently prepared from 3-bromo-2-triisopropylsilyloxyfuran via lithium-bromine exchange and in situ quench with carbon or heteroatom electrophiles. The inherent flexibility of this methodology is illustrated by a short and efficient synthesis of an anti-inflammatory marine natural product.