tert-Butyl acrylate → tert-Butyl 3-(3-(2-(4-(2-isopropylthiazole-4-carbonyl)-1-oxa-4,9-diazaspiro[5.5]undecan-9-yl)ethyl)phenethoxy)propanoate

HRID 1255333Notes

Reaction equation

HRID 1255333 reaction equation
[OH:1][CH2:2][CH2:3][C:4]1[CH:5]=[C:6]([CH:30]=[CH:31][CH:32]=1)[CH2:7][CH2:8][N:9]1[CH2:29][CH2:28][C:12]2([O:17][CH2:16][CH2:15][N:14]([C:18]([C:20]3[N:21]=[C:22]([CH:25]([CH3:27])[CH3:26])[S:23][CH:24]=3)=[O:19])[CH2:13]2)[CH2:11][CH2:10]1.[C:33]([O:37][C:38]([CH3:41])([CH3:40])[CH3:39])(=[O:36])[CH:34]=[CH2:35].[OH-].C([N+](C)(C)C)C1C=CC=CC=1>C(#N)C>[CH:25]([C:22]1[S:23][CH:24]=[C:20]([C:18]([N:14]2[CH2:13][C:12]3([CH2:28][CH2:29][N:9]([CH2:8][CH2:7][C:6]4[CH:5]=[C:4]([CH:32]=[CH:31][CH:30]=4)[CH2:3][CH2:2][O:1][CH2:35][CH2:34][C:33]([O:37][C:38]([CH3:41])([CH3:40])[CH3:39])=[O:36])[CH2:10][CH2:11]3)[O:17][CH2:16][CH2:15]2)=[O:19])[N:21]=1)([CH3:27])[CH3:26]

Participants

5

Reactant 3

HCID 15458tert-Butyl acrylateHCID 66854Benzyltrimethylammonium hydroxideHCID 58168488(9-(3-(2-Hydroxyethyl)phenethyl)-1-oxa-4,9-diazaspiro[5.5]undecan-4-yl)(2-isopropylthiazol-4-yl)methanone

Product 1

HCID 58168491tert-Butyl 3-(3-(2-(4-(2-isopropylthiazole-4-carbonyl)-1-oxa-4,9-diazaspiro[5.5]undecan-9-yl)ethyl)phenethoxy)propanoate

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Procedure

(9-(3-(2-Hydroxyethyl)phenethyl)-1-oxa-4,9-diazaspiro[5.5]undecan-4-yl)(2-isopropylthiazol-4-yl)methanone [Example 34a, step a] (13.2 g) was dissolved in acetonitrile (20 mL) and tert-butyl acrylate (8.13 g) added, followed by benzyltrimethylammonium hydroxide (40% in water, 3.93 mL). The mixture was stirred at ambient temperature for 3 hours. The volatiles were removed under reduced pressure and the residue purified by flash silica chromatography eluting with 5% methanol and 1% triethylamine in ethyl acetate to afford the subtitled compound Yield 13.2 g.

Workup

  1. customThe volatiles were removed under reduced pressure
  2. customthe residue purified by flash silica chromatography
  3. washeluting with 5% methanol and 1% triethylamine in ethyl acetate

Sources & evidence

ORD record
ord-9e11beb3b27d49d38aed6b477227c4ed
Source dataset
uspto-grants-2013_06
Patent number
US08455483B2

Reaction notes

Loading…