Chloroacetone → 2-{[4-(2-Chlorophenyl)-3-ethoxycarbonyl-5-methoxycarbonyl-6-methyl-1,4-dihydropyridin-2-yl]methoxymethyl}-4-methylthiazole

HRID 2290318Notes

Reaction equation

HRID 2290318 reaction equation
[Cl:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[CH:8]1[C:13]([C:14]([O:16][CH3:17])=[O:15])=[C:12]([CH3:18])[NH:11][C:10]([CH2:19][O:20][CH2:21][C:22]([NH2:24])=[S:23])=[C:9]1[C:25]([O:27][CH2:28][CH3:29])=[O:26].Cl[CH2:31][C:32](=O)[CH3:33]>C(O)C>[Cl:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[CH:8]1[C:13]([C:14]([O:16][CH3:17])=[O:15])=[C:12]([CH3:18])[NH:11][C:10]([CH2:19][O:20][CH2:21][C:22]2[S:23][CH:31]=[C:32]([CH3:33])[N:24]=2)=[C:9]1[C:25]([O:27][CH2:28][CH3:29])=[O:26]

Participants

4

Reactant 2

HCID 6571ChloroacetoneHCID 134572282-{[4-(2-Chlorophenyl)-3-ethoxycarbonyl-5-methoxycarbonyl-6-methyl-1,4-dihydropyridin-2-yl]methoxy}-thioacetamide

Product 1

HCID 134572062-{[4-(2-Chlorophenyl)-3-ethoxycarbonyl-5-methoxycarbonyl-6-methyl-1,4-dihydropyridin-2-yl]methoxymethyl}-4-methylthiazoleYield 16.3%

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

A solution of 2-{[4-(2-chlorophenyl)-3-ethoxycarbonyl-5-methoxycarbonyl-6-methyl-1,4-dihydropyridin-2-yl]methoxy}-thioacetamide (0.44 g) and chloroacetone (0.30 g) in ethanol (30 ml) was heated under reflux for 7 hours and then evaporated. The residual oil was purified by chromatography on silica (t.l.c. grade, 10 g) using dichloromethane plus 0-10% v/v ethyl acetate as eluant. Appropriate fractions were combined and evaporated and the residue triturated with diisopropyl ether. The resulting solid was collected, washed with petroleum ether (b.p. 60°-80° C.) and dried to give the title compound (78 mg), m.p. 107°-110° C.

Workup

  1. temperatureunder reflux for 7 hours
  2. customevaporated
  3. customThe residual oil was purified by chromatography on silica (t.l.c. grade, 10 g)
  4. customevaporated
  5. customthe residue triturated with diisopropyl ether
  6. customThe resulting solid was collected
  7. washwashed with petroleum ether (b.p. 60°-80° C.)
  8. customdried

Sources & evidence

ORD record
ord-83cf82465bc24ea38044ec04b56abadd
Source dataset
uspto-grants-1986_10
Patent number
US04616024

Reaction notes

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