Efficient preparation of E-β-iodovinyl phenylsulfone by Finkelstein reaction at a vinylic center
摘要:
Treatment of E-beta-chlorovinyl phenylsulfone, a crystalline compound that can be conveniently prepared on a large scale from 1,1,2-trichloroethane, by sodium iodide in acetone at ca 130 degrees C, in a sealed vessel affords the title iodosulfone in good yield. (C) 1998 Published by Elsevier Science Ltd. All rights reserved.
A new class of 3,4-disubstituted pyrroles has been prepared by the reaction of 1-aroyl-2-arylsul-fonylethenes and 1,2-diarylsulfonylethenes with tosyl methyl isocyanide.
Cyclofunctionalisation of epoxyalcohol derivatives. 1. Delivery of functionalised carbon for stereospecific synthesis of dihydrofurans and dihydroxyacids
作者:Stuart W. McCombie、Bandarpalle B. Shankar、Ashit K. Ganguly
DOI:10.1016/s0040-4039(01)84583-4
日期:——
E-2-(Phenylsulfonyl)vinyl ethers of 2,3-epoxyalcohols are stereospecifically rearranged to 3-(phenylsulfony])-4-(1-hydroxyalkyl)-4,5-dihydrofurans on treatment with LDA. Oxidation of these compounds or the derived des-sulfonyl compounds provides esters or lactones which correspond to regiospecific delivery of -CO2H or -CH2CO2H to C-2, with inversion.
在用LDA处理后,将2,3-环氧醇的E-2-(苯磺酰基)乙烯基醚立体有择地重排为3-(苯磺酰基)-4-(1-羟烷基)-4,5-二氢呋喃。这些化合物或衍生的去磺酰基化合物的氧化提供了酯或内酯,其对应于-CO 2 H或-CH 2 CO 2 H向C-2的区域特异性递送,并具有转化作用。
Pelter, Andrew; Ward, Robert S.; Little, Gillian M., Journal of the Chemical Society. Perkin transactions I, 1990, # 10, p. 2775 - 2790
作者:Pelter, Andrew、Ward, Robert S.、Little, Gillian M.
DOI:——
日期:——
Bhaskar Reddy; Chandrasekhar Babu; Venugopal Reddy, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 2001, vol. 40, # 5, p. 416 - 418