Phase-transfer catalyzed condensation of 3-methyl-5-pyrazolone with carbon disulfide and alkyl bromides

DOI: 10.1055/s-1991-26500

Source and publish data:

Synthesis p. 481 - 482 (1991)

Update date:2022-08-05

Topics:

Authors:

Oliva Oliva

Castro Castro

Castillo

Leon Leon

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Article abstract of DOI:10.1055/s-1991-26500

Reaction of 3-methyl-5-pyrazolones with carbon disulfide and alkyl bromides under phase-transfer catalysis to give alkyl 5-hydroxy-3-methyl-1H-pyrazole-4-carbodithioates is described. Using 1,2-dibromoethane or 1,3-dibromopropane, the corresponding cyclic

Full text of DOI:10.1055/s-1991-26500

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