… -Benzobicyclo [2.2. 2] oct-2-ene-5, 7-diyl diradical as a common intermediate in the di-. pi.-methane rearrangement of 6, 7-benzobicyclo [3.2. 1] octa-2, 6-diene and the …

…, N Carballeira, O De Lucchi

Index: Adam, Waldemar; Carballeira, Nestor; Lucchi, Ottorino De Journal of the American Chemical Society, 1980 , vol. 102, # 6 p. 2107 - 2109

Full Text: HTML

Citation Number: 7

Abstract

The fate of the triplet state a-type 1, 5 diradical T2a is also quite well defined since the TMD chemienergized process (fact ii; cf. entry 2 in Table I) affords exclusively oxirane 5a via triplet acetone sensitization. Whether T2a relaxes into the more stable T217 1, 5 diradical or whether it directly decarboxylates into the 1, 3 diradical 4 cannot be differentiated on the basis of our results. The disadvantage of a r-type 1, 5 diradical T217 is that ...