1,2-Dichloroethane → 3-(3,4-Difluorophenyl)-3-methoxypyrrolidine

HRID 575952Notes

Reaction equation

HRID 575952 reaction equation
C([N:8]1[CH2:12][CH2:11][C:10]([C:15]2[CH:20]=[CH:19][C:18]([F:21])=[C:17]([F:22])[CH:16]=2)([O:13][CH3:14])[CH2:9]1)C1C=CC=CC=1.ClCCCl.ClC(OC(Cl)C)=O>CO>[F:22][C:17]1[CH:16]=[C:15]([C:10]2([O:13][CH3:14])[CH2:11][CH2:12][NH:8][CH2:9]2)[CH:20]=[CH:19][C:18]=1[F:21]

Participants

5

Reactant 3

HCID 111,2-DichloroethaneHCID 5213051-Chloroethyl chloroformateHCID 674032321-Benzyl-3-(3,4-difluorophenyl)-3-methoxypyrrolidine

Product 1

HCID 462192213-(3,4-Difluorophenyl)-3-methoxypyrrolidineYield 78.9%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

Preparation according to Example 1. (+)-1-benzyl-3-(3,4-difluorophenyl)-3-methoxypyrrolidine (0.202 g, 0.66 mmol), 1,2-dichloroethane (20 ml), 1-chloroethyl chloroformate (0.38 g, 2.66 mmol) refluxed for 1 h, and methanol (20 ml) reflux 1 h Purification by HPLC on waters OBD C18, 5 μm (MeOH/33 mM NH3, 20:80 to 50:50) gave the title compound (0.111 g, 78%). [a]D=+5.8° (methanol). MS m/z (rel. intensity, 70 eV) 213 (M+, 1), 198 (44), 183 (84), 171 (bp), 141 (45).

Workup

  1. customPreparation
  2. customPurification by HPLC on waters OBD C18, 5 μm (MeOH/33 mM NH3, 20:80 to 50:50)

Sources & evidence

ORD record
ord-692d7cf3008341759df1729482d9287e
Source dataset
uspto-grants-2015_05
Patent number
US09035073B2

Reaction notes

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