in tetrahydrofuran soln. of the W-compound was treated with gasous (13)CO2 at -78°C, warmed to 25°C; solvent removed (vac.), extd. (diethyl ether), ether removed (vac.); IR, MAS;
参考文献
Journal of the American Chemical Society, , vol. 102, p. 7604 - 7606