Intramolecular Diels-Alder reactions of sulphonyl-substituted trienes. Stereospecific formation of cis-fused bicyclo[4.3.0] and -[4.4.0] systems possessing a bridgehead sulphonyl group
作者:Martin C. Clasby、Donald Craig
DOI:10.1016/0040-4039(92)80032-f
日期:1992.6
The synthesis and thermal intramolecular Diels-Alderreactions of (E)-2-(phenylsulphonyl)-1,6,8-nonatriene 1, (E)-2-(phenylsulphonyl)-1,7,9-decatriene 2, (2E, 7E)-3-(phenylsulphonyl)-2,7,9-decatriene 3, and (2E, 8E)-3-(phenylsulphonyl)-2,8,10-undecatriene 4 are described. The reactions are highly selective for the cis-fused bicyclic products, whose structures are assigned by X-ray crystallography.