共 10 条
[3]
HELFERICH B, 1974, LIEBIGS ANN CHEM, V9, P1514
[4]
KOPPER S, UNPUB
[6]
OGAWA K, 1969, DENPUN KOGYO GAKKAIS, V0017
[7]
VERDEGAAL CHM, 1980, TETRAHEDRON LETT, P1571