Paramagnetic intermediates in the photolysis of 2-methylpropanoyltripropylstannane studied by means of multinuclear CIDNP
Abstract
1 H, 13C and 119Sn CIDNP studies of 2-methylpropanoyltripropylstannane Pr3SnC(O)Pri 1 photolysis in benzene have shown that its photodecomposition occurs from the triplet excited state via Sn–C (tin–carbonyl) bond cleavage. Formation of Pr3Sn˙, ˙COCHMe2 and ˙CHMe2 free radicals has been observed. Possibilities of their reactions with initial ketone and main reaction products have been discussed.