Hydrochloric Acid → 4-[1-(1-ethylbut-3-yn-1-yl)-1H-pyrazol-4-yl]-7-[2-(trimethylsilyl)ethoxy]methyl-7H-pyrrolo[2,3-d]pyrimidine

Participants

Reaction Conditions

Reaction Steps

A solution of 4-[1-(4,4-dibromo-1-ethylbut-3-en-1-yl)-1H-pyrazol-4-yl]-7-[2-(trimethylsilyl)-ethoxy]methyl-7H-pyrrolo[2,3-d]pyrimidine (20 mg, 0.00004 mol) (from Example 503 Step 1) in THF (1 mL, 0.01 mol) at −78° C. was treated with 2.5 M n-butyllithium in hexane (0.032 mL). The mixture was stirred at −78° C. for 1 h and then at room temperature for 1 h. The reaction was quenched with water (1 mL, 0.06 mol) and 1N HCl. The reaction was partitioned between water and ethyl acetate. The organic extract was washed with saturated sodium chloride, dried over magnesium sulfate, filtered and concentrated to give 4-[1-(1-ethylbut-3-yn-1-yl)-1H-pyrazol-4-yl]-7-[2-(tri-methylsilyl)ethoxy]methyl-7H-pyrrolo[2,3-d]pyrimidine as a semisolid (12 mg, 80%). LC/MS (M+H)+: m/z=396.

Provenance & Evidence