Reference of 153912-60-8, These common heterocyclic compound, 153912-60-8, name is 1,5-Dimethyl-1H-pyrazol-3-yl-methanol, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route.
[5-Cyano-7-(1,5-dimethyl-1H-pyrazol-3-ylmethoxy)-8-methyl-1-propyl-1,3,4,9-tetrahydro pyrano[3,4-b]indol-1-yl]-acetic acid To a solution of 5-cyano-7-hydroxy-8-methyl-1-propyl-1,3,4,9-tetrahydro-pyrano[3,4-b]indol-1-yl)-acetic acid methyl ester (50 mg, 0.15 mmoles) in DCM (1 mL) was added (1,5-dimethyl-1H-pyrazol-3-yl)-methanol (20 mg, 0.17 mmoles) and triphenylphosphine (95 mg, 0.37 mmol). To this was added 1,1′-(azodicarbonyl)dipiperidine (ADDP, 92 mg, 0.37 mmoles). The reaction was stirred for 1.5 hours, diluted with EtOAc and washed twice with H2O and brine. The EtOAc layer was dried (MgSO4) and concentrated. Flash chromatography on SiO2 eluding with 1:1 hexane/EtOAc yielded 53 mg (80%) of a yellow oil that crystallized upon standing.
Statistics shows that 1,5-Dimethyl-1H-pyrazol-3-yl-methanol is playing an increasingly important role. we look forward to future research findings about 153912-60-8.
Reference:
Patent; Condon, Stephen M.; Jackson, Randy William; Laporte, Matthew G.; Burns, Christopher J.; Herbertz, Torsten; Gaboury, Janet A.; US2007/219212; (2007); A1;,
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