Hydrochloric Acid → HCID 18770470, compound

Participants

Reaction Steps

A 5N aqueous sodium hydroxide (2 ml; 10 mmol) was added to a solution in methanol (2 ml) of methyl 1,3-bis(1-[(E)-5-(3,4,5-trimethoxyphenyl)-2-penten-4-ynoyl]-4-piperidinyl]-2-propanecarboxylate (136 mg; 0.18 mmol) synthesized by the above process, and the mixture was stirred for 1 hour in a bath controlled at 65° C. The reaction mixture was made acidic by addition of 1N hydrochloric acid and extracted with chloroform. The organic layer was washed with saturated brine, dried over anhydrous sodium sulfate and then concentrated under reduced pressure. The resultant crude oil was purified by column chromatography on silica gel, thereby obtaining 46 mg (yield: 35%) of the title compound as a pale yellow amorphous powder.

Provenance & Evidence