共 25 条
[21]
SCHWARZ, Patent No. 2169434
[22]
SMYTH, 1938, J AM CHEM SOC, V60, P183
[23]
SMYTH, 1937, J PHYS CHEM, V41, P209
[25]
TAYLOR, 1937, ORGANIC CHEM NITROGE, P88