Electric Literature of 14804-31-0, The chemical industry reduces the impact on the environment during synthesis 14804-31-0, name is 4-Bromo-1-methoxy-2-methylbenzene, I believe this compound will play a more active role in future production and life.
EXAMPLE 109; Preparation of 2-Amino-5-(4-methoxy-3-methyl phenyl)-3-methyl-5-(2-phenylpyridin-4-yl)-3,5-dihydro-4H-imidazol-4-one; Step a) [(4-Methoxy-3-methylphenyl)ethynyl](trimethyl)silane; A solution of 4-bromo-1-methoxy-2-methylbenzene (6.702 g) in toluene was treated with tetrakis(triphenylphosphie)palladium (0) (1.15 g), followed by diisopropylamine (23 mL), trimethylsilyl acetylene (4.7 mL) and copper iodide (I) (0.127 g). The reaction was heated at 45 C. in nitrogen atmosphere overnight and evaporated to dryness. The resultant residue was applied on a large silica pad and eluted with hexane:ethyl acetate (2:1). The elute was evaporated to dryness to give the silane intermediate as a brown oil (7.167 g). The compound was characterized by LCMS analysis. LCMS Conditions: HP 1100 HPLC system; Waters Xterra MS C18, 2 mm (i.d.)×50 mm (length), 3.5 um column, set at 50 C.; Flow rate 1.0 mL/min; Solvent A: 0.02% NH4OH in water; Solvent B 0.02% NH4OH in ACN; Gradient: Time O: 10% B; 2.5 min 90% B; 3 min 90% B; Sample concentration: 2.0 mM; Injection volume: 5 uL; Detection: 220 nm, 254 nm DAD
In the field of chemistry, the synthetic routes of compounds are constantly being developed and updated. I will also mention this compound in other articles, 4-Bromo-1-methoxy-2-methylbenzene, other downstream synthetic routes, hurry up and to see.
Reference:
Patent; Wyeth; US2007/4730; (2007); A1;,
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