Chloromethyl ethyl ether → 1-{[4-Ethoxymethoxy-2-(hex-5-enyl-methyl-carbamoyl)-cyclopentanecarbonyl]-amino}-2-vinyl-cyclopropanecarboxylic acid ethyl ester

HRID 390115Notes

Reaction equation

HRID 390115 reaction equation
[CH2:1]([O:3][C:4]([C:6]1([NH:11][C:12]([CH:14]2[CH2:18][CH:17]([OH:19])[CH2:16][CH:15]2[C:20](=[O:29])[N:21]([CH2:23][CH2:24][CH2:25][CH2:26][CH:27]=[CH2:28])[CH3:22])=[O:13])[CH2:8][CH:7]1[CH:9]=[CH2:10])=[O:5])[CH3:2].CCN(C(C)C)C(C)C.Cl[CH2:40][O:41][CH2:42][CH3:43]>C(Cl)Cl>[CH2:1]([O:3][C:4]([C:6]1([NH:11][C:12]([CH:14]2[CH2:18][CH:17]([O:19][CH2:40][O:41][CH2:42][CH3:43])[CH2:16][CH:15]2[C:20](=[O:29])[N:21]([CH2:23][CH2:24][CH2:25][CH2:26][CH:27]=[CH2:28])[CH3:22])=[O:13])[CH2:8][CH:7]1[CH:9]=[CH2:10])=[O:5])[CH3:2]

Participants

5

Reactant 3

HCID 18523Chloromethyl ethyl etherHCID 81531DiisopropylethylamineHCID 668706071-{[2-(Hex-5-enyl-methyl-carbamoyl)-4-hydroxy-cyclopentanecarbonyl]-amino}-2-vinyl-cyclopropanecarboxylic acid ethyl ester

Product 1

HCID 668711271-{[4-Ethoxymethoxy-2-(hex-5-enyl-methyl-carbamoyl)-cyclopentanecarbonyl]-amino}-2-vinyl-cyclopropanecarboxylic acid ethyl ester

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a stirred solution of the diene 1c (7.94 g, 0.02 mol) in DCM and DIPEA (9.7 ml, 6 eq) at 0° C. (ice-bath) was added chloromethylethyl ether (2.79 g, 3 eq). The reaction mixture was stirred at room temperature overnight, concentrated by rotary evaporation and purified by column chromatography on silica gel (EtOAc/petroleum ether 1:1→1:0) which gave the pure title compound as slightly yellow syrup (6.67 g, 74%).

Workup

  1. concentrationconcentrated by rotary evaporation
  2. custompurified by column chromatography on silica gel (EtOAc/petroleum ether 1:1→1:0) which

Sources & evidence

ORD record
ord-99cbd25087a446b68f188c8b7bfd9dca
Source dataset
uspto-grants-2013_02
Patent number
US08383584B2

Reaction notes

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