Mironov V.; Mavleev R.; Burnaeva L.; Konovalova I.; Chernov P.; Pudovik A.
(1993)
The reaction of 2-substituted 4-oxo-5, 6-benzo-1, 3, 2-dioxaphosphorinanes with ethyl pyruvate affords ring-expansion products, i.e., diastereomeric 2-substituted 2, 5-dioxo-6, 7benzo-1, 3, 2-dioxaphosphepanes. © 1994 ...