Valence tautomers of dimethyl cycloocta-2,5,7-triene-1,4-dicarboxylate and an iron tricarbonyl complex therefrom
作者:Robert C. Kerber、Heinz Müller
DOI:10.1016/0022-328x(87)80071-2
日期:1987.8
gives predominantly tricyclo[5.1.0.02,4]oct-5-ene-3,8-dicarboxylic acid and trans,cis,cis,trans-deca-2,4,6,8,-tetraene-1,10-dioic acid; in addition, a small quantity of cycloocta-2,5,7-triene-trans-1,4-dicarboxylic acid has been identified as its dimethyl ester. The tricyclooctene diester is in equilibrium with a small amount of the isomeric cis-disubstituted cycloocta-2,5,7-triene in solution, and heating
环辛三烯二锂Li 2 C 8 H 8的羧基化反应主要产生三环[5.1.0.0 2,4 ]辛-5-烯-3,8-二羧酸和反式,顺式,顺式,顺式-癸-2,4,6 ,8,-四烯-1,10-二甲酸; 另外,已鉴定出少量的环辛-2,5,7-三烯-反-1,4-二羧酸作为其二甲酯。三环辛烯二酯与溶液中的少量异构体顺式-二取代的环辛基-2,5,7-三烯处于平衡状态,加热这种溶液导致形成二聚体。三环辛烯二酯与五碳三铁反应生成exo(2–5)η-(3,8×-二甲氧基双环[4.2.0] octa-2,4-diene]三羰基铁。