TY - JOUR
T1 - Isomerizations of benzannelated C9H10 bicyclic systems into cyclononatetraenes. insight into the behaviour of medium-sized conjugated rings
AU - Willner, Itamar
AU - Rabinovitz, Mordecai
PY - 1979
Y1 - 1979
N2 - Dibenzobicyclo[5.2.0]non-8-ene 9 was prepared from 2,3:6,7-dibenzocycloheptatriene as starting material. The bicyclic system 9 isomerized thermally to give cis,trans- and cis,cis-1,2:7,8-dibenzocyclononatetraene. The formation of cis,trans-1,2:7,8-dibenzocyclononatetraene occurs in an allowed concerted electrocyclic process of general interest.
AB - Dibenzobicyclo[5.2.0]non-8-ene 9 was prepared from 2,3:6,7-dibenzocycloheptatriene as starting material. The bicyclic system 9 isomerized thermally to give cis,trans- and cis,cis-1,2:7,8-dibenzocyclononatetraene. The formation of cis,trans-1,2:7,8-dibenzocyclononatetraene occurs in an allowed concerted electrocyclic process of general interest.
UR - http://www.scopus.com/inward/record.url?scp=49249150495&partnerID=8YFLogxK
U2 - 10.1016/S0040-4020(01)93750-0
DO - 10.1016/S0040-4020(01)93750-0
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AN - SCOPUS:49249150495
SN - 0040-4020
VL - 35
SP - 2359
EP - 2364
JO - Tetrahedron
JF - Tetrahedron
IS - 20
ER -