共 13 条
- [1] AKITA Y, 1981, SYNTHESIS-STUTTGART, P974
- [2] PTERIDINE STUDIES .39. PTERIDINES UNSUBSTITUTED IN 4-POSITION - A NEW SYNTHESIS FROM PYRAZINES, VIA 3,4-DIHYDROPTERIDINES [J]. JOURNAL OF THE CHEMICAL SOCIETY C-ORGANIC, 1970, (11): : 1540 - &
- [3] Camerino B., 1960, GAZZ CHIM ITAL, V90, P1807
- [4] CRAGOE EJ, 1967, Patent No. 3341540
- [8] HOFFMANN H, 1962, CHEM BER-RECL, V95, P523