Each compound has different characteristics, and only by selecting the characteristics of the compound suitable for a specific situation can the compound be applied on a large scale. 153687-35-5, name is 1-(4-Methoxybenzyl)-1H-pyrazole-4-carbaldehyde, This compound has unique chemical properties. The synthetic route is as follows., name: 1-(4-Methoxybenzyl)-1H-pyrazole-4-carbaldehyde
1H-PYRAZOLE-4-CARBALDEHYDE (55). To a solution of 1- (4-METHOXY-BENZYL)-1H- pyrazole (0.21 mol) (Synth. Commun. 1990, 20/18 ; 2849) in dry DMF (235 ml) was added POCL3 (1.5 eq. ) dropwise at room temperature. The mixture was then heated at 95C for 16 hrs. After cooling to room temperature, the reaction mixture was neutralized by adding ice and saturated sodium carbonate solution. EtOAc (800 ml) was added and the organic layer was separated and washed several times with water. After drying (Na2SO4), the solvent was removed and the crude product was purified over silica gel to give 16.4 g (35% yield) desired aldehyde 1-(4-METHOXY-BENZYL)-LH- pyrazole-4-carbaldehyde. It was heated with 150 ml TFA for 2 hrs. TFA was evaporated and the basified crude product was purified on silica gel to give 5.3 g of 55.
Chemical properties determine the actual use. Each compound has specific chemical properties and uses. We look forward to more synthetic routes in the future to expand reaction routes of 153687-35-5.
Reference:
Patent; IMCLONE SYSTEMS INCORPORATED; WO2005/813; (2005); A1;,
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics