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1-(3,5-DiMethyl-pyrazol-1-yl)-ethanone synthesis

10synthesis methods
-

Yield: 98%

Reaction Conditions:

in neat (no solvent) at 120; for 0.166667 h;Microwave irradiation;

Steps:

3.1.General procedure for the synthesis of pyrazoles and diazepines
General procedure: The hydrazine/hydrazide/o-phenylenediamine (0.5 mmol) and 1,3-diketone (0.55 mmol) were mixed in a closed microwave tube and subjected to microwave irradiation on a CEM Discover SP microwave system in standard mode at 120 C for 5-20 min. Upon completion of the reaction, the crude product may be purified by passing through silica gel column eluting with 20% ethyl acetate in hexane to afford the pure products. The characterization data of the synthesized compounds are in agreement with earlier reported data (ESI).

References:

Vaddula, Buchi Reddy;Varma, Rajender S.;Leazer, John [Tetrahedron Letters,2013,vol. 54,# 12,p. 1538 - 1541] Location in patent:supporting information