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ethyl 7-Methylpyrazolo[1,5-a]pyriMidine-5-carboxylate synthesis

1synthesis methods
1225387-53-0 Synthesis
1H-PYRAZOL-5-AMINE

1225387-53-0
57 suppliers
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615-79-2 Synthesis
Ethyl 2,4-dioxovalerate

615-79-2
229 suppliers
$8.00/5g

ethyl 7-Methylpyrazolo[1,5-a]pyriMidine-5-carboxylate

90840-53-2
9 suppliers
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Ethyl 5-methylpyrazolo[1,5-a]pyrimidine-7-carboxylate

145371-72-8
6 suppliers
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Yield:145371-72-8 27% ,90840-53-2 73%

Reaction Conditions:

in ethanol at -10 - 0; for 2 h;

References:

Stepaniuk, Oleksandr O.;Matviienko, Vitalii O.;Kondratov, Ivan S.;Vitruk, Igor V.;Tolmachev, Andrei O. [Synthesis,2013,vol. 45,# 7,art. no. SS-2012-T0927-OP,p. 925 - 930] Location in patent:supporting information