tert-Butyl acrylate → 2-Methylpentane

HRID 1255316Notes

Reaction equation

HRID 1255316 reaction equation
[Cl:1][C:2]1[C:28]([CH2:29][CH2:30][OH:31])=[CH:27][CH:26]=[CH:25][C:3]=1[CH2:4][N:5]1[CH2:24][CH2:23][C:8]2([O:13][CH2:12][CH2:11][N:10]([C:14]([C:16]3[N:17]=[C:18]([CH2:21][CH3:22])[S:19][CH:20]=3)=[O:15])[CH2:9]2)[CH2:7][CH2:6]1.[C:32]([O:36][C:37]([CH3:40])([CH3:39])[CH3:38])(=[O:35])[CH:33]=[CH2:34]>O.C(#N)C>[CH3:27][CH2:28][CH2:2][CH:3]([CH3:25])[CH3:4].[Cl:1][C:2]1[C:3]([CH2:4][N:5]2[CH2:6][CH2:7][C:8]3([O:13][CH2:12][CH2:11][N:10]([C:14]([C:16]4[N:17]=[C:18]([CH2:21][CH3:22])[S:19][CH:20]=4)=[O:15])[CH2:9]3)[CH2:23][CH2:24]2)=[CH:25][CH:26]=[CH:27][C:28]=1[CH2:29][CH2:30][O:31][CH2:34][CH2:33][C:32]([O:36][C:37]([CH3:40])([CH3:39])[CH3:38])=[O:35]

Participants

6

Reactant 2

HCID 15458tert-Butyl acrylateHCID 58168486(9-(2-Chloro-3-(2-hydroxyethyl)benzyl)-1-oxa-4,9-diazaspiro[5.5]undecan-4-yl)(2-ethylthiazol-4-yl)methanone

Product 2

HCID 78922-MethylpentaneHCID 58168518Tert-butyl 3-(2-chloro-3-((4-(2-ethylthiazole-4-carbonyl)-1-oxa-4,9-diazaspiro[5.5]undecan-9-yl)methyl)phenethoxy)propanoate

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6342AcetonitrileSolvent

Procedure

Triton-B (40% in water, 0.94 mL) was added to a solution of (9-(2-chloro-3-(2-hydroxyethyl)benzyl)-1-oxa-4,9-diazaspiro[5.5]undecan-4-yl)(2-ethylthiazol-4-yl)methanone [Example 26, step c] (3.2 g) and tert-butyl acrylate (1.5 mL) in acetonitrile (1 mL) and the resulting mixture stirred overnight at RT. The solvent was evaporated and the residue was purified by flash silica chromatography, elution gradient 1:1:0.05 ethyl acetate:isohexane:triethylamine to 95:5 ethyl acetate:triethylamine to give the subtitled compound as a clear oil. Yield 3.2 g.

Workup

  1. customThe solvent was evaporated
  2. customthe residue was purified by flash silica chromatography, elution gradient 1:1:0.05 ethyl acetate

Sources & evidence

ORD record
ord-cb42d73e7e4d498a9df220c95d287efb
Source dataset
uspto-grants-2013_06
Patent number
US08455483B2

Reaction notes

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