John Jinu P, Novikov Alexei V
Chemistry Department, University of North Dakota, 151 Cornell Street Stop 9024, Grand Forks, North Dakota 58202, USA.
Org Lett. 2007 Jan 4;9(1):61-3. doi: 10.1021/ol062592h.
[reaction: see text] Carbethoxy diazosulfones and sulfonates, easily available from corresponding sulfones and sulfonates, undergo C-H insertion with preferential formation of six membered cyclic sulfones and sulfonates.