Acetic Acid → 1-(10,10-Dimethyl-11-oxa-3,8-diazaspiro[5.5]undecan-3-yl)-2,2,2-trifluoro-ethanone acetic acid salt

Participants

Reaction Steps

A mixture of acetic acid (100 μL, 1.76 mmol), Pd(OH)2 (11 mg, 0.02 mmol), 1-(8-benzyl-10,10-dimethyl-11-oxa-3,8-diazaspiro[5.5]undecan-3-yl)-2,2,2-trifluoro-ethanone (80 mg, 0.22 mmol), HCl (108 μL of 4 M in dioxane, 0.43 mmol) and ethanol (2 mL) was treated to an atmosphere of hydrogen at 85 psi for 3 days. The reaction mixture was filtered and the catalyst was washed with methanol, then concentrated in vacuo to give 1-(10,10-dimethyl-11-oxa-3,8-diazaspiro[5.5]undecan-3-yl)-2,2,2-trifluoro-ethanone acetic acid salt as a yellow solid. ESI-MS m/z calc. 280.1. found 281.5 (M+1)+; Retention time: 0.91 minutes (3 min run).

Provenance & Evidence