92234-09-8Relevant articles and documents
Cyclic Cross-Conjugated Bond Systems, 44. Higher Vinylogous Heptafulvalenes, Syntheses - Thermolyses
Schweikert, Otto,Netscher, Thomas,Knothe, Lothar,Prinzbach, Horst
, p. 2045 - 2062 (2007/10/02)
The (Z)/(E)-heptafulvatrienes 3/4, the heptafulvadienine 5, and the heptafulvadienediine 6 are synthesized.In 5/6 selective cis-hydrogenation of the triple bond(s) (to yield 3, 39) is not achieved.Upon thermolysis of 3 in ca. 10-1 M solutions above 70 deg C isomerisation to 4 takes place, 18?-electrocyclisation occurs, if at all, only to a minor extent.