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18162-48-6872-50-4Methylene ChloridenaphthaleneTHFTitanium Dioxide

1H-Pyrazole-4-carboxylicacid,3-cyano-,methylester(9CI) synthesis

1synthesis methods
Hydrazinium, methylidyne-, inner salt (9CI)

6843-83-0
0 suppliers
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2-Butenedioic acid, 2,3-dicyano-, dimethyl ester, (2E)-

35234-87-8
0 suppliers
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1H-Pyrazole-3-carboxylicacid,4-cyano-,methylester(9CI)

105020-45-9
6 suppliers
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1H-Pyrazole-3-carboxylicacid,4-cyano-1-methyl-,methylester(9CI)

105020-37-9
2 suppliers
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1H-Pyrazole-4-carboxylicacid,3-cyano-,methylester(9CI)

33090-69-6
17 suppliers
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Methyl 4-cyano-1-methyl-1H-pyrazole-5-carboxylate

70910-18-8
3 suppliers
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Yield:70910-18-8 37% ，105020-37-9 6% ，105020-45-9 31%

Reaction Conditions:

in tetrahydrofuran at 0; for 3 h;

References:

Huisgen, Rolf;Mitra, Abhijit;Moran, Joaquin Rodriguez [Heterocycles,1986,vol. 24,# 9,p. 2429 - 2436]