... l ~ - ~ Our interest in the chemistry of isomhch- nones stems from studies in our laboratory dealing with the rhodium(I1)-catalyzed reactions of a-diazo carbonyl ... Regitz, M.; Hocker, J.; Leidhergener, A. Organic Synthesis; John Wdey: New York, 1973; Collect. ... Page 5. 1422 J. Org. ...