Synthesis of methyl 3-acyl-6-amino-5-cyano-4-phenyl-4H-pyran-2-carboxylates and their rearrangement into 2-hydroxy-4-[hydroxy(R)methylidene]-3-oxo-5-phenylcyclopent-1-ene-1-carbonitriles
作者:V. P. Sheverdov、O. E. Nasakin、A. Yu. Andreev、V. L. Gein、V. A. Tafeenko