Diels-Alder reactions of [(S)R]-(1E,3E)-1-p-tolylsulfinyl-1,3-pentadiene: the unexpected evolution of maleic anhydride adducts
作者:M. Carmen Carreño、M. Belén Cid、José L. García Ruano
DOI:10.1016/0957-4166(96)00258-3
日期:1996.7
The Diels-Alder adducts resulting in the reaction of enantiomerically pure [(S)R]-(1E,3E)-1-p-tolylsulfinyl-1,3-pentadiene with maleic anhydride evolved stereoselectively in situ through several intramolecular tandem reactions, involving [2,3]-sigmatropic sulfoxide-sulfenate rearrangement, acylation of the sulfinyl oxygen, and elimination of the sulfur function through a SN2′ process yielding lactones
Diels-Alder加合物导致对映体纯的[[S] R ]-(1 E,3 E)-1-对甲苯基亚磺酰基-1,3-戊二烯与马来酸酐的反应是通过数次分子内串联反应在原位选择性地形成的,涉及[2,3] -sigmatropic亚砜-亚磺酸酯重排,亚磺酰氧的酰化,并通过S N 2'过程消除硫功能,生成内酯3和4。