A FACILE SYNTHESIS OF PYRAZOLO[3,4-B]PYRAZINES

[1] BARALDI PG, 1984, SYNTHESIS-STUTTGART, P148

[2] SYNTHESIS OF PYRAZOLO[3,4-B][1,4]DIAZEPINES AND PYRAZOLO[3,4-B]PYRAZINES [J]. JOURNAL OF HETEROCYCLIC CHEMISTRY, 1989, 26 (04) : 949 - 955

[3] EBISCH R, 1986, Patent No. 234014

[4] REACTIVITY OF PYRAZOLO[4,3-C][1,2,5]OXADIAZIN-3(5H)-ONES TOWARD C-NUCLEOPHILES - SYNTHESIS OF PYRAZOLO[3,4-B]PYRAZINES [J]. JOURNAL OF HETEROCYCLIC CHEMISTRY, 1986, 23 (02) : 585 - 588

[5] GRANDBERG II, 1962, ZH OBSHCH KHIM+, V32, P1898

[6] MICHAELIS A, 1907, LIEBIGS ANN CHEM, V354, P103

[7] 1-phenyl-3-methyl-5-aminopyrazol [J]. JOURNAL FUR PRAKTISCHE CHEMIE-LEIPZIG, 1909, 79 (1/2): : 1 - 49

[1] BARALDI PG, 1984, SYNTHESIS-STUTTGART, P148

[2] SYNTHESIS OF PYRAZOLO[3,4-B][1,4]DIAZEPINES AND PYRAZOLO[3,4-B]PYRAZINES [J]. JOURNAL OF HETEROCYCLIC CHEMISTRY, 1989, 26 (04) : 949 - 955

[3] EBISCH R, 1986, Patent No. 234014

[4] REACTIVITY OF PYRAZOLO[4,3-C][1,2,5]OXADIAZIN-3(5H)-ONES TOWARD C-NUCLEOPHILES - SYNTHESIS OF PYRAZOLO[3,4-B]PYRAZINES [J]. JOURNAL OF HETEROCYCLIC CHEMISTRY, 1986, 23 (02) : 585 - 588

[5] GRANDBERG II, 1962, ZH OBSHCH KHIM+, V32, P1898

[6] MICHAELIS A, 1907, LIEBIGS ANN CHEM, V354, P103

[7] 1-phenyl-3-methyl-5-aminopyrazol [J]. JOURNAL FUR PRAKTISCHE CHEMIE-LEIPZIG, 1909, 79 (1/2): : 1 - 49