Formaldehyde → HCID 59785882, compound

Participants

Reaction Conditions

Reaction Steps

To the product of Example 1 (500 mg, 1.155 mmol) was added paraformaldehyde (347 mL, 11.6 mmol) and pyrrolidine (0.243 mL, 2.94 mmol) in EtOH (10 mL)/THF (3 mL). The reaction vessel was sealed and heated to 65° C. for 4.5 h. The reaction was cooled and diluted with EtOAc and washed with brine. The solution was dried (Na2SO4) and concentrated. The residue was dissolved in THF (8 mL) and MeOH (1 mL) and NaBH4 (87 mg, 2.31 mmol) was added. After 25 min the reaction was diluted with EtOAc and washed with 2 M aq HCl and brine. The concentrated residue was purified by flash chromatography on silica gel gradient eluted with 0-60% EtOAc in hexane affording the title compound. (LC-2) HPLC/MS: 448.2 (M+1), 450.2 (M+3); Rt=4.23 min.

Provenance & Evidence