Sodium Hydroxide → HCID 86586636, compound

Participants

Reaction Steps

This product was obtained from deprotection of two batches of 5-acetyl-2-((2-azidoethyl)oxy)methyl-3-(2-cyanoethoxy)carbonyl-1,4-dihydro-6-methyl-4-(3,4-methylenedioxy)phenylpyridine obtained from the previous experiment (340 mg and 200 mg) and were combined after completion of the reaction. A mixture of 5-acetyl-2-((2-azidoethyl)oxy)methyl-3-(2-cyanoethoxy)carbonyl-1,4-dihydro-6-methyl-4-(3,4-methylenedioxy)phenylpyridine (340 mg, 0.750 mmol; 200 mg (60%), 0.200 mmol), 1 N NaOH (1.12 mL; 0.40 mL) in a mixture of dioxane (3 mL; 3 mL) were stirred at room temperature for 1.5 hours. The two batches were concentrated in vacuo, the combined batches were dissolved in 40 mL of water, washed with dichloromethane (30 mL) and EtOAc (20 mL), acidified with 1 N HCl solution (pH=4-5), and extracted with dichloromethane (2×50 mL). The combined dichloromethane extracts were washed with brine (40 mL), dried (MgSO4), and the solvent was removed in vacuo to give 300 mg (25%) of the title compound as a yellow paste which solidified on standing: mp 120° C. (decomp.). The product was used in the next step after spectral characterization.

Provenance & Evidence