共 21 条
[1]
ARNOLD RG, 1954, Patent No. 2697711
[2]
BOURDAIS J, 1966, CR ACAD SCI C CHIM, V263, P84
[4]
BRAND K, 1924, J PRAKT CHEM, V108, P22
[5]
ELDERFIELD RC, 1957, HETEROCYCL COMPOUNDS, V5, P484
[6]
ELGUERO J, UNPUB
[10]
HERKES FE, 1975, Patent No. 3929882