(RS)-5-[(4-Carbomethoxyphenyl)methoxy]-2-(diphenyacetyl)-1,2,3,4-tetrahydro-6-methoxy-3-isoquinolinecarboxylic acid, ethyl ester → HCID 15296726, compound

Participants

Reaction Steps

A solution of 1.10 g (0.0019 mole) of the diester from Example 32 in 100 mL of methanol and 15 mL of 2N sodium hydroxide is heated to the boiling point, allowing the methanol to distill off. After 1 hour (pot temperature =90° C.), 1N hydrochloric acid (35 mL) is added to precipitate a gum. On addition of 10 mL of ether, crystals develop; wt. 0.84 g. Recrystallization from ethyl acetate-petroleum ether gives pure product; mp 190°-192° C.

Provenance & Evidence