C. Hada, M. Banciu, J. Mattalia
May 27, 1996
Citations
0
Influential Citations
4
Citations
Journal
Tetrahedron Letters
Abstract
Abstract The radical cyclisation reaction of the 5-[2-bromo-ethyl]-5H-dibenzo[ a , d ]cycloheptene 4 with Bu 3 SnH and AIBN led to the cyclised hydrocarbon 5 as major product, whereas the bromo-derivative 8 with Bu 3 SnH and AIBN gave only the straight chain product 9 . An explanation based on the conformational rigidity of dibenzo[ a , d ]cycloheptene system calculated by AM1 method is proposed.