2-Naphthalenecarboxaldehyde → HCID 59581353, compound

Participants

Reaction Conditions

Reaction Steps

A stirred solution of 2-amino-N-[(4S)-3-methyl-2,5-dioxo-1′,3′-dihydrospiro[imidazolidine-4,2′-inden]-5′-yl]acetamide from Step B (80.0 mg, 0.277 mmol) and 2-naphthaldehyde (65.0 mg, 0.416 mmol), in MeOH (3 mL) was heated to 50° C. After 5 hours, no additional formation of the intermediate imine could be observed, so the reaction was cooled to 0° C., prior to the introduction of sodium borohydride (21.0 mg, 0.555 mmol). After 10 minutes the reaction was complete. The bulk of the solvent was remove in vacuo, and the resulting residue was applied to a silica gel column for purification, eluting with DCM:MeOH (10% conc. NH4OH)—98:2 to 92:8. Product containing fractions were pooled and concentrated in vacuo to give the title compound. MS: m/z=429 (M+1).

Provenance & Evidence