TY - JOUR
T1 - A novel titanium-iduced aromatic dicrbonyl coupling. Synthesis of a chiral strained polynuclear aromatic hydrocarbon
AU - Agranat, Israel
AU - Suissa, M. Rachel
AU - Cohen, Shmuel
AU - Isaksson, Roland
AU - Sandström, Jan
AU - Dale, Johannes
AU - Grace, David
PY - 1987
Y1 - 1987
N2 - The titanium-induced coupling of 10,11-dihydro-5H-dibenzo[a,d]cyclohepten- 5-one (3) gave 10,10′11,11′-tetrahydro-5,5′-bis(5H-dibenzo[a, d]cycloheptenyl) (5) and the chiral bridged diphenylanthracene (4), which was resolved and has a racemization barrier of ∼23 kcal/mol (1 cal = 4.184 J); the crystal structure of (4) has been determined.
AB - The titanium-induced coupling of 10,11-dihydro-5H-dibenzo[a,d]cyclohepten- 5-one (3) gave 10,10′11,11′-tetrahydro-5,5′-bis(5H-dibenzo[a, d]cycloheptenyl) (5) and the chiral bridged diphenylanthracene (4), which was resolved and has a racemization barrier of ∼23 kcal/mol (1 cal = 4.184 J); the crystal structure of (4) has been determined.
UR - http://www.scopus.com/inward/record.url?scp=37049080619&partnerID=8YFLogxK
U2 - 10.1039/C39870000381
DO - 10.1039/C39870000381
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AN - SCOPUS:37049080619
SN - 0022-4936
SP - 381
EP - 383
JO - Chemical Communications
JF - Chemical Communications
IS - 5
ER -