Water → HCID 67212526, compound

Participants

Reaction Conditions

Reaction Steps

To a mixture of the above described 7-benzenesulfonyl-3-oxa-7,9-diaza-bicyclo[3.3.1]nonane (1.25 g, 4.658 mmol) in acetonitrile (40 ml) and 36.5% formaldehyde solution in water (0.53 ml, 6.987 mmol) and 5 drops of acetic acid at 23° C. was added sodium cyanoborohydride (1.464 g, 23.29 mmol) and the mixture was stirred at 23° C. for 2 h. Poured onto water and extracted twice with ethyl acetate, dried the organic layer over sodium sulfate, filtered off, evaporated all volatiles totally and dried in high vacuum to give after silica gel column chromatography with ethyl acetate and additional methanol and aqueous ammonia solution the title compound as a colorless oil (0.88 g, 67%), MS (ISP) m/e=283.1 [(M+H)+].

Provenance & Evidence