Ring transformation of 1,5-diazabicyclo[3.1.0]hexanes under the action of arylketenes
作者:Alexander V. Shevtsov、Vladimir V. Kuznetsov、Alexander A. Kislukhin、Vera Yu. Petukhova、Yu. A. Strelenko、Nina N. Makhova、Konstantin A. Lyssenko
DOI:10.1002/jhet.5570430411
日期:2006.7
instead of the expected bicyclic systems 1,5-diazabicyclo[3.2.1]octan-6-one 9 and 3-aryl-1,5-diazabicyclo[3.3.0]octane-2-one 10. The synthesis of two representatives of bicycles 10 (10a,b) proceeded in the reaction of unsubstituted 1,5-diazabicycle[3.1.0]hexane 8a, accordingly, with diphenylketene 1a in benzene at 20 °C and with 4-chlorophenylketene 1b in toluene at 60-110 °C. Mechanisms of the studied transformations
1,5-二氮杂双环[3.1.0]己烷8与芳基烯酮1的反应已在不同条件下进行了研究。1-(芳基乙基)吡唑烷11是在-30°C的乙醚中和20°C的苯中获得的,而不是预期的双环体系1,5-二氮杂双环[3.2.1] octan-6-one 9和3-芳基-1,5-二氮杂双环[3.3.0]辛烷-2-一10。自行车10(10a,b)的两个代表的合成在未取代的1,5-二氮杂双环[3.1.0]己烷8a的反应中进行,相应地,在20℃下与苯中的二苯基乙烯酮1a和4-氯苯基乙烯酮1b反应。在60-110°C的甲苯中溶解。提供了研究的转化机制。