124-126 OC; 'H NMR (CDClJ 6 2.07 (9 H, s), 4.60 (3 H, dd, J ... Photolysis of Methyl 3-Diazo-2-oxopropionate. Wolff Migration of the Carbomethoxy Group' ... Robert R. Gallucci and Maitland Jones, Jr.* ... Department of Chemistry, Princeton University, Princeton, New Jersey 08544 ... In 1977 Bien and Sega12 reported an unusual palladi- um-catalyzed Wolff rearrangement of ethyl 3-diazo-2- oxopropionate. Here we describe our results on the pho- tolysis of the ...