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.
从β-硝基醇开始制备反应性很强的亲二烯体,即β-磺酰基硝基烯烃。在温和条件下,由于硝基和磺酰基基团引起的高活化促进了Diels-Alder反应与各种二烯的反应。用Bu 3 SnH还原消除加合物得到环状的1,4-二烯。