in tetrahydrofuran; N,N,N',N',N'',N''-hexamethylphosphoric triamide at -78°C in THF/hexamethylphosphoramide (3:1), after 1 h at -60°C the reaction is worked up;
参考文献
Journal of the American Chemical Society, , vol. 111, p. 1804 - 1814
in N,N,N',N',N'',N''-hexamethylphosphoric triamide addition at -70°C, mixture is stirred at 0°C for 21 h before oxidation, reaction medium: hexamethylphosphoramide;
参考文献
Journal of the American Chemical Society, , vol. 111, p. 1804 - 1814
