Tetrahedron letters

Cobalt-mediated reactions. A new synthetic approach to β-, γ-and δ-lactams

GB Gill, G Pattenden, SJ Reynolds

文献索引：Gill, G. Bryon; Pattenden, Gerald; Reynolds, Stephen J. Tetrahedron Letters, 1989 , vol. 30, # 24 p. 3229 - 3232

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被引用次数: 61

摘要

Summary: Unsaturated carbamylcobalt salophens, e. 9.(2), undergo homolytic cleavage (A, sunlamp) producing carbamyl radicals, viz (4) which then undergo cyclisation, accompanied by trapping (with Co II or TEMPO) or dehydrocobaltation, leading to functionalised B-, y-, and 6-lactams eg (31,(61,(8).(111,(13) and (16).