Alkatrienyl Sulfoxides and Sulfones. V. Tandem Cyclization, Rearrangement, and Aromatization of 1‐ and 3‐Vinylallenyl Sulfoxides and Sulfones in Diels‐Alder Reaction
作者:Valerij Ch. Christov、Ivaylo K. Ivanov
DOI:10.1081/scc-200034813
日期:2004.12.31
Abstract The Diels‐Alder reaction of 1‐ and 3‐vinylallenyl sulfoxides and sulfones with dimethyl but‐2‐ynedioate proceeds with tandem cyclization, rearrangement, and aromatization leading to the formation of 4‐sulfinyl(sulfonyl)‐ or 3‐sulfinyl(sulfonyl)methyl‐substituted phthalates in good yields. #Dedicated to Professor Dr. Toru Minami from Kyushu Institute of Technology, Kitakyushu, Japan on the
Alkatrienyl Sulfoxides and Sulfones, VIII: Diels–Alder Reaction of 3‐Methylpenta‐1,2,4‐trienyl Phenyl Sulfoxide with Maleic Anhydride
作者:Valerij C. Christov、Ivaylo K. Ivanov
DOI:10.1080/00397910701547698
日期:2007.9.1
Abstract Regio‐and stereo‐selective Diels–Alder reaction of 3‐methylpenta‐1,2,4‐trienyl phenyl sulfoxide with maleic anhydride in the absence or presence of a Lewis acid as catalyst with formation of sulfinyl‐substituted benzofuran or norbornene cycloadducts, respectively, is described.