Benzyl Bromide → HCID 69300327, compound

Participants

Reaction Steps

In 5 mL of THF, 145 mg (0.35 mmol) of 1-(3-benzyloxy-17-cyclopropylmethyl-4,5α-epoxy-14-hydroxy-morphinan-6β-yl)-pyrrolidin-2-one obtained in Example 47-1 was dissolved, and 2.84 mL (1.02 mmol) of 0.36 N LDA/THF solution was added at −78° C., followed by stirring the mixture for 1 hour. Thereafter, 0.10 mL (0.87 mmol) of benzyl bromide was added thereto and the resulting mixture was stirred for 3 hours. To this reaction solution, aqueous saturated sodium hydrogen carbonate solution was added and the resulting mixture was extracted with chloroform. Organic layers were combined, washed with saturated saline, dried over anhydrous magnesium sulfate and concentrated to obtain 1-(3-benzyloxy-17-cyclopropylmethyl-4,5α-epoxy-14-hydroxy-morphinan-6β-yl)-3-benzyl-pyrrolidin-2-one as a crude product.

Provenance & Evidence