化学
分子内力
苯
异丙基
药物化学
氢原子萃取
光化学
辐照
氢原子
氢
有机化学
群(周期表)
物理
核物理学
作者
Tadashi Hasegawa,Mariko Watabe,Hiromu Aoyama,Yoshimori Omote
出处
期刊:Tetrahedron
[Elsevier]
日期:1977-01-01
卷期号:33 (5): 485-488
被引量:24
标识
DOI:10.1016/s0040-4020(77)80004-5
摘要
Upon benzene-sensitized irradiation N,N-dibenzyl α,β-unsaturated amides 1a-1c cyclized to the corresponding 2-azetidinones 2a-2c in good yields via intramolecular hydrogen abstraction by the β-C atom. Under the same conditions N,N-diisopropyl amides 1e and 1f were found to undergo a novel photoreaction to give N-isopropyl saturated amides via the abstraction. Irradiation of N,N-diethyl and dimethyl amides gave neither 2-azetidinones nor N-monosubstituted amides.
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