Ethylmorpholine → HCID 91594889, compound

Participants

Reaction Steps

A solution of 0.180 g of methoxyacetic acid in 10 ml of dimethylformamide was treated in sequence with 0.254 ml of N-ethylmorpholine, 0.270 g of 1-hydroxybenzotriazole and 0.384 g of 1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide hydrochloride. Stirring was continued at room temperature for 1 hour and then 0.459 g of (E)-2(R)-[1(S)-[(tetrahydro-2(RS)-pyranyloxy)carbamoyl)-4-phenyl-3-butenyl]-2′-isobutyl-4-methylvalerohydrazide was added. Stirring was continued at room temperature overnight and then the solvent was evaporated and replaced by ethyl acetate. The ethyl acetate layer was washed with 5% aqueous citric acid, 5% aqueous sodium hydrogen carbonate and brine and then dried over anhydrous magnesium sulphate. Evaporation and trituration with diethyl ether gave 0.543 g of (E)-2(R)-[1(S)-(tetrahydro-2(RS)-pyranyloxy)carbamoyl]-4-phenyl-3-butenyl]-2′-isobutyl-2′-(2-methoxyacetyl)-4-methylvalerohydrazide in the form of a white solid.

Provenance & Evidence