trifluorormethanesulfonic acid in diethyl ether T=-78°C; to RT, sealed pressure bottle;
参考文献
Ku, Thomas W.; Ali, Fadia E.; Bondinell, William E.; Erhard, Karl F.; Huffmann, William F.; et al.
Tetrahedron Letters, 1997 , vol. 38, # 18 p. 3131 - 3134
Ku, Thomas W.; Ali, Fadia E.; Bondinell, William E.; Erhard, Karl F.; Huffmann, William F.; et al.
Tetrahedron Letters, 1997 , vol. 38, # 18 p. 3131 - 3134
