A new non-nitrogenous precursor of dimethylcarbene has been synthesized. Ph
otolysis of 10,10'-dimethyltricyclo[4.3.1.0(1,6)]deca-2,4-diene in solution
with 254 nm light produces dimethylcarbene. Previously unknown intermolecu
lar reactions of dimethylcarbene have been observed. (C) 2001 Elsevier Scie
nce Ltd. All rights reserved.