Polyfunctionalized Cage Compounds by Pericyclic Domino Processes of 4,5-Dicyanopyridazine with Dienes: Applications and Limits
作者:Donatella Giomi、Rodolfo Nesi、Stefania Turchi、Elena Mura
DOI:10.1021/jo991191v
日期:2000.1.1
bis-diene to give 4-oxatricyclo[4.3.1.0(3,7)]dec-8-ene, 5-aza- and 5-silatricyclo[5.3.1.0(3,8)]undec-9-ene, tricyclo[3.2.1.0(2, 7)]oct-3-ene, and tricyclo[5.3.1.0(3,8)]undec-9-ene derivatives through purely pericyclic, three-step homodomino processes with diverse bis-dienophiles; whereas the reaction with myrcene (21) was characterized by a complete sitoselectivity affording compound 25, treatment of 1
发现标题化合物1表现为有吸引力的掩蔽双二烯,得到4-氧杂三环[4.3.1.0(3,7)] dec-8-烯,5-氮杂-和5-硅三环[5.3.1.0(3) ,8)] undec-9-ene,三环[3.2.1.0(2,7)] oct-3-ene和三环[5.3.1.0(3,8)] undec-9-ene衍生物通过纯周环,三不同双双亲子的逐步多态性过程;与月桂烯(21)的反应的特征在于完全的位置选择性,得到化合物25,用(R)-(-)-β-香茅烯(26a)处理1得到纯手性非对映异构体30a和31a的3∶1混合物。强调了这种方法的一些局限性,主要是由于对关键的环己-1,3-二烯中间体的竞争性副反应引起的。根据光谱数据建立了新化合物的结构。