Radical-chain cyclisation of unsaturated acetals and thioacetals in the presence of thiols as polarity-reversal catalysts
摘要:
Polarity-reversal catalysis by thiols has been applied to promote the radical-chain cyclisation of 2-(pent-4-enyl)-substituted 1,3-dioxolanes, 1,3-dithianes and 1,3-dithiolanes to give spirocyclic products. (C) 1999 Elsevier Science Ltd. All rights reserved.
Radical-chain cyclisation of unsaturated acetals and thioacetals in the presence of thiols as polarity-reversal catalysts
摘要:
Polarity-reversal catalysis by thiols has been applied to promote the radical-chain cyclisation of 2-(pent-4-enyl)-substituted 1,3-dioxolanes, 1,3-dithianes and 1,3-dithiolanes to give spirocyclic products. (C) 1999 Elsevier Science Ltd. All rights reserved.
Translocation of radical sites by intramolecular 1,5-hydrogen atom transfer
作者:Dennis P. Curran、Dooseop. Kim、Hong Tao. Liu、Wang. Shen
DOI:10.1021/ja00225a052
日期:1988.8
Cyclisation radicalaire de bromo-2 hexenes-1 substitues et fonctionnalises, en methylcyclopentanes correspondants
环化自由基 de bromo-2 hexenes-1 substitues et fonctionnalises, enmethylcyclopentanes 对应物
Radical translocation reactions of vinyl radicals: substituent effects on 1,5-hydrogen-transfer reactions
作者:Dennis P. Curran、Wang Shen
DOI:10.1021/ja00067a021
日期:1993.7
systematic study of the radicaltranslocation (1,5-hydrogen-transfer) reactions of vinylradicals is described. The effects of monoalkoxy, dialkoxy, monoalkylthio, dialkylthio, thiohemiketal, phenyl, allyl, carboxylate ester, nitrile, and tertiary, secondary, and primary alkyl substituents on the transferring C-H bond were studied. The protocol was first to generate vinylradicals which were next translocated