Addition of trimethylsilyl azide and of “mixed anhydrides” to the N-C(3) σ-bond in 3-substituted-1-azabicyclo[1.1.0]butanes
作者:Alan P. Marchand、G. V. M. Sharma、D. Rajagopal、Rajesh Shukla、Grzegorz Mlostoń、Romuald Bartnik
DOI:10.1002/jhet.5570330349
日期:1996.5
adduct, 2, that reacts in situ with a variety of electrophilic reagents (i.e., ethyl chloroformate, p-toluenesulfonyl chloride, benzoyl chloride, acetyl chloride, and oxalyl chloride) to afford the corresponding N-substituted-3-azido-3-ethylazetidines 3–7, respectively in 62–72% yield. Similarly, 1 reacts regiospecifically with “mixed anhydrides” (i.e., p-toluenesulfonyl acetate, methanesulfonyl acetate
叠氮化三甲基甲硅烷基可平稳地添加到3-乙基-1-氮杂双环[1.1.0]-丁烷(1)中的高应变NC(3)σ键中,以提供加合物2,该加合物2可与多种亲电试剂原位反应(即,氯甲酸乙酯,p甲苯磺酰氯,苯甲酰氯,乙酰氯,草酰氯),得到相应的ñ取代-3-叠氮基-3- ethylazetidines 3-7在62-72%的产率分别。类似地,1与“混合酸酐”(即对甲苯磺酰乙酸酯,甲磺酰乙酸酯和苯甲酰基三氟甲磺酸酯)在区域上发生反应,得到相应的加合物,分别为8-10),产率为38-68%。的反应p与1-氮杂-3-苯基[1.1.0]丁烷甲苯磺酰叠氮化物(12)产生两种产物:ñ - (p甲苯磺酰基-3-叠氮基-3-苯基吖(13,15%)和二聚产品,ñ - (N'-对甲苯磺酰基-3'-苯基-3'-氮杂环丁烷基)-3-叠氮基-3-苯基吖(14,28%)氯甲酸乙酯添加到ñ -C(3)σ-在1-氮杂-3-(溴甲基)双环[1