Ammonia → 9-((4-(2-(tert-Butyldimethylsilyloxy)ethyl)thiophen-2-yl)methyl)-1-oxa-4,9-diazaspiro[5.5]undecane
Reaction equation
N.[Si:2]([O:9][CH2:10][CH2:11][C:12]1[CH:13]=[C:14]([CH2:17][N:18]2[CH2:34][CH2:33][C:21]3([O:26][CH2:25][CH2:24][N:23](C(=O)C(F)(F)F)[CH2:22]3)[CH2:20][CH2:19]2)[S:15][CH:16]=1)([C:5]([CH3:8])([CH3:7])[CH3:6])([CH3:4])[CH3:3]>CO>[Si:2]([O:9][CH2:10][CH2:11][C:12]1[CH:13]=[C:14]([CH2:17][N:18]2[CH2:34][CH2:33][C:21]3([O:26][CH2:25][CH2:24][NH:23][CH2:22]3)[CH2:20][CH2:19]2)[S:15][CH:16]=1)([C:5]([CH3:6])([CH3:7])[CH3:8])([CH3:4])[CH3:3]Participants
4
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Procedure
‘880’ Aqueous ammonia (1.5 mL) was added to stirred solution of 1-(9-((4-(2-(tert-butyldimethylsilyloxy)ethyl)thiophen-2-yl)methyl)-1-oxa-4,9-diazaspiro[5.5]undecan-4-yl)-2,2,2-trifluoroethanone (example 43, step a) (1.0 g) in methanol (5 mL). After 16 h the reaction mixture was evaporated to dryness. Acetonitrile was added, the solution evaporated to dryness in vacuo, and this process was repeated three times to give the subtitled compound as a white solid. Yield 0.78 g.