Dicyclohexylcarbodiimide → Tert-butyl 3-(3-((1-methylpiperidin-4-yloxy)carbonyl)benzyl)-4-oxo-1-phenyl-1,3,8-triazaspiro[4.5]decane-8-carboxylate

HRID 2362877Notes

Reaction equation

HRID 2362877 reaction equation
[C:1]([O:5][C:6]([N:8]1[CH2:34][CH2:33][C:11]2([N:15]([C:16]3[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=3)[CH2:14][N:13]([CH2:22][C:23]3[CH:24]=[C:25]([CH:29]=[CH:30][CH:31]=3)[C:26]([OH:28])=[O:27])[C:12]2=[O:32])[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].C1(N=[C:42]=[N:43][CH:44]2[CH2:49][CH2:48][CH2:47][CH2:46]C2)CCCCC1.C[C@H](O)CC>CN(C)C1C=CN=CC=1.ClCCl>[CH3:42][N:43]1[CH2:44][CH2:49][CH:48]([O:27][C:26]([C:25]2[CH:24]=[C:23]([CH:31]=[CH:30][CH:29]=2)[CH2:22][N:13]2[C:12](=[O:32])[C:11]3([CH2:33][CH2:34][N:8]([C:6]([O:5][C:1]([CH3:4])([CH3:2])[CH3:3])=[O:7])[CH2:9][CH2:10]3)[N:15]([C:16]3[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=3)[CH2:14]2)=[O:28])[CH2:47][CH2:46]1

Participants

6

Reactant 3

HCID 10868DicyclohexylcarbodiimideHCID 444683(+)-2-ButanolHCID 666520763-((8-(Tert-butoxycarbonyl)-4-oxo-1-phenyl-1,3,8-triazaspiro[4.5]decan-3-yl)methyl)benzoic acid

Product 1

HCID 58046678Tert-butyl 3-(3-((1-methylpiperidin-4-yloxy)carbonyl)benzyl)-4-oxo-1-phenyl-1,3,8-triazaspiro[4.5]decane-8-carboxylateYield 56%

Reagents, catalysts & solvents 2

HCID 142844-(Dimethylamino)pyridineCatalystHCID 6344DichloromethaneSolvent

Procedure

To a solution of 3-((8-(tert-butoxycarbonyl)-4-oxo-1-phenyl-1,3,8-triazaspiro[4.5]decan-3-yl)methyl)benzoic acid (0.15 g, 0.32 mmol), dicyclohexylcarbodiimide (0.079 g, 0.38 mmol) and 4-(dimethylamino)pyridine (0.005 g, 0.038 mmol) in dichloromethane (5 mL), was added (S)-2-butanol (0.037 g, 0.32 mmol). After stirring at room temperature for 60 hours, the reaction mixture was filtered, concentrated in vacuo and isolated by preparatory TLC (10% methanol/dichloromethane) to obtain the title compound (0.1 g, 56%); 1H NMR (DMSO-d6): δ 1.45 (s, 9H), 1.63-1.66 (m, 4H), 1.89 (br, 2H), 2.15-2.23 (m, 5H), 2.43-2.48 (m, 4H), 3.43 (br, 2H), 3.89 (br, 2H), 4.60-4.65 (m, 4H), 4.95-5.00 (m, 1H), 6.67 (d, 2H, J=8.4 Hz), 6.76 (t, 1H, J=7.6 Hz), 7.17 (t, 2H, J=8.4 Hz), 7.52-7.60 (m, 2H), 7.86-7.91 (m, 2H); MS for C32H42N4O5 m/z 563.06(M+H)+.

Workup

  1. filtrationthe reaction mixture was filtered
  2. concentrationconcentrated in vacuo
  3. customisolated by preparatory TLC (10% methanol/dichloromethane)

Sources & evidence

ORD record
ord-f2cb3dd97ac64b85aa36378546fe1372
Source dataset
uspto-grants-2014_04
Patent number
US08691836B2

Reaction notes

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