Reference of 25016-11-9, In the next few decades, the world population will flourish. As the population grows rapidly and people all over the world use more and more resources, all industries must consider their environmental impact. 25016-11-9, name is 1-Methyl-1H-pyrazole-4-carbaldehyde belongs to pyrazoles-derivatives compound, it is a common compound, a new synthetic route is introduced below.
Step 1 : methyl 14-cvclohexyl-6-f(l -methyl- 1 H-pyrazol-4-yl )methyl]-5.6.7, 8-tetrahvdroindolo[2, 1 – a] [2,5 Jbenzodiazocine-] 1 -carboxylate; To a solution of methyl 14-cyclohexyl-5,6,7,8-tetrahydroindolo[2,l-a][2,5]-benzodiazocine-l l- carboxylate (prepared as described in Example 48, Step 3) in MeOH (0.06 M), 1 -methyl- lH-pyrazole-4- carbaldehyde (3 eq) was added and the pH adjusted to pH 4 with acetic acid. The solution was stirred at RT for 30 mins before addition of NaBH3CN (1.5 eq). The reaction was stirred at RT for 16 h. The reaction was quenched with saturated aqueous NaHCO3 and extracted with EtOAc (x2). The combined organics were washed with brine, dried (Na2SO1O, filtered and concentrated in vacuo to give the title compound as a viscous oil (quantitative); MS (ES+) m/z 483 (M+H)+
The synthetic route of 1-Methyl-1H-pyrazole-4-carbaldehyde has been constantly updated, and we look forward to future research findings.