共 18 条
- [1] BUFFIN MEC, 1967, AUST J CHEM, V20, P1041
- [3] CSIZMADIA I, J AM CHEM SOC
- [5] ELGUERO J, 1976, ADV HETEROCYCL CHE S, V1
- [6] HOFFMANN S, 1969, Z CHEM, V9, P66
- [8] HURST DT, 1977, HETEROCYCLES, V6, P1999
- [10] LEVY GC, 1979, NITROGEN 15 NMR SPEC