W. Zhang et G. Pugh, Free radical reactions for heterocycle synthesis: formation of keto spiro-gamma-lactones and keto spiro-gamma-lactams, TETRAHEDR L, 40(43), 1999, pp. 7595-7598
A new method for the synthesis of keto spiro-gamma-lactones and keto spiro-
gamma-lactams by intramolecular free radical cyclization is described. (C)
1999 Elsevier Science Ltd. All rights reserved.