Preparation of a new type of electron-deficient olefins: .beta.-phenylthio nitro olefins, .beta.-sulfinyl nitro olefins, and .beta.-sulfonyl nitro olefins
β-Sulfonylnitroolefins as very reactive alkyne-equivalents in Diels-Alder reactions
作者:Noboru Ono、Akio Kamimura、Aritsune Kaji
DOI:10.1016/s0040-4039(00)84323-3
日期:1986.1
Very reactive dienophiles, β-sulfonylnitroolefins, are prepared starting from β-nitro alcohols. The high activation due to the nitro and the sulfonyl groups promotes the Diels-Alder reaction to various dienes under mild conditions. Reductive elimination of the adduct with Bu3SnH gives cyclic 1,4-dienes.