Thiocarbonyl ylides. Photogeneration, rearrangement, and cycloaddition reactions
Thiocarbonyl ylides. Photogeneration, rearrangement, and cycloaddition reactions
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硫代羰基叶立德。
DOI:
10.1021/ja00428a029
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发表时间:
1974
期刊:
影响因子:
--
通讯作者:
M. DeTar
中科院分区:
文献类型:
--
作者:
A. Schultz;M. DeTar
Naphthyl vinyl sulfides 8-13 undergo regiospecific photocyclization to thiocarbonyl ylides. These reactive intermediates rearrange to [2, l-6] dihydrothiophenes 14, 21, 22, 24, 25, and 26, andcycloadd to N-phenylmaleimide to give multicyclic adducts in high yield (eg, 16a, 16b, and 23). Conversion of 8 to 21 has been shown to occur by conrotatory photocycliza-tion of 8 to thiocarbonyl ylide 29 (stereochemistry determined by isolation and x-ray analysis of adduct 23); subsequent supra-facial hydrogen migration in 29 gives highly strained trans-fused dihydrothiophene 21.