ChemInform Abstract: Synthesis of spiro Anellated Isochromanones by Ring Expansion of Benzocyclobutenones in the Presence of Lithium Diisopropylphosphide.

Abstract

The reaction occurs at very mild conditions and involves an oxyanion driven ring opening. -(KOHSER, S. C.; DONGOL, K. G.; BUTENSCHOEN*, H.; Heterocycles 74 (2007) 1, 339-350; Inst. Org. Chem., Univ. Hannover, D-30167 Hannover, Germany; Eng.) -K. Woydowski 25-137