in neat (no solvent) Me3SiCl, Me3SiOSiMe3 and 2-propanol stirred for 30 min, boric acid added and stirred for 3 h; soln. filtered and concd., mixt. analysed by using combined gas chromatograph-mass spectroscopy;
cation exchange resin KU-2 in H+ form T=150°C; 6 h;
参考文献
Chemistry of Heterocyclic Compounds (New York, NY, United States), , vol. 21, # 11 p. 1297 - 1298
Khimiya Geterotsiklicheskikh Soedinenii, , vol. 21, # 11 p. 1571 - 1572