P. Bennett et al., MEDIUM-DEPENDENT TRAPPING OF DIAZOALKANE INTERMEDIATES DURING PHOTOLYSIS OF DIAZIRINES, Journal of the Chemical Society, Chemical Communications, (8), 1994, pp. 961-962
Photolysis of an intimate mixture of methyl(phenyl)diazirine and N-met
hylmaleimide in the absence of solvent permits the diazoalkane interme
diate to be trapped, whereas the equivalent reaction in solution gives
only cyclopropanated adducts.