Tollenaere, Catherine De; Ghosez, Leon, Bulletin des Societes Chimiques Belges, 1997, vol. 106, # 11, p. 677 - 684
作者:Tollenaere, Catherine De、Ghosez, Leon
DOI:——
日期:——
An efficient preparation of β-dimethylaminovinyl sulfone and sulfoximide, and investigation of their reactivity as dipolarophiles
作者:Nela Peša、Chris J. Welch、Andrew N. Boa
DOI:10.1002/jhet.5570420420
日期:2005.5
N'-dimethylamino)ethenyl)-S-phenyl-N-(p-tolylsulfonyl) sulfoximide in high yields is described. A reversal in regioselectivity was observed when the β-dimethylaminovinylsulfone was employed as a dipolarophile in cycloadditions with nitrile oxides. The sulfone gives rise mainly to 4-substituted isoxazoles, after elimination of dimethyl amine. In comparison, phenyl vinyl sulfone cycloadds to give 5-substituted isoxazolines