Site specificity in cycloadditions of diphenylnitrile imine with 8-substituted-8-azaheptafulvenes and tricarbonyl (8-azaheptafulvene) iron complexes
作者:R. Gandolfi、L. Toma
DOI:10.1016/0040-4020(80)80045-7
日期:1980.1
mixture of two [8+4]-adducts in high yield. The mechanism of the reaction was investigated. The [8+4]-adducts underwent easily a reversible thermal 1,7-sigmatropic shift involving an sp3 nitrogen centre. Diphenylnitrile imine reacted also with tricarbonyl(8-azaheptafutvene)iron complexes lo give adducts to the CN double bond, the degradative oxidation of which with trimethylamine-N-oxide was investigated
二苯基腈亚胺与8-取代的8-氮杂庚烯富烯的反应是位点和区域特异性的,并且以高收率产生两种[8 + 4]加合物的混合物。研究了反应机理。[8 + 4]加合物很容易经历一个涉及sp 3氮中心的可逆1,7-可逆热转变。二苯基腈亚胺也与三羰基(8-azaheptafutvene)铁配合物反应,生成CN双键的加合物,并研究了其被三甲胺-N-氧化物的氧化降解。在简单的扰动理论方法的基础上,简要讨论了环加成反应的特异性。