Hydrochloric Acid → (2R,5S)-2-Methanesulfonyloxymethyl-5-(3-trifluoromethoxy-phenylcarbamoyl)-pyrrolidine-1-carboxylic acid benzyl ester

HRID 1527348Notes

Reaction equation

HRID 1527348 reaction equation
[CH2:1]([O:8][C:9]([N:11]1[C@H:15]([C:16](=[O:29])[NH:17][C:18]2[CH:23]=[CH:22][CH:21]=[C:20]([O:24][C:25]([F:28])([F:27])[F:26])[CH:19]=2)[CH2:14][CH2:13][C@@H:12]1[CH2:30][OH:31])=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.CCN(CC)CC.[S:39](Cl)([CH3:42])(=[O:41])=[O:40].Cl>C(Cl)Cl>[CH2:1]([O:8][C:9]([N:11]1[C@H:15]([C:16](=[O:29])[NH:17][C:18]2[CH:23]=[CH:22][CH:21]=[C:20]([O:24][C:25]([F:26])([F:27])[F:28])[CH:19]=2)[CH2:14][CH2:13][C@@H:12]1[CH2:30][O:31][S:39]([CH3:42])(=[O:41])=[O:40])=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

6

Reactant 4

HCID 313Hydrochloric AcidHCID 8471TriethylamineHCID 31297Methanesulfonyl chlorideHCID 68284198(2R,5S)-2-Hydroxymethyl-5-(3-trifluoromethoxy-phenylcarbamoyl)-pyrrolidine-1-carboxylic acid benzyl ester

Product 1

HCID 86673829(2R,5S)-2-Methanesulfonyloxymethyl-5-(3-trifluoromethoxy-phenylcarbamoyl)-pyrrolidine-1-carboxylic acid benzyl ester

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Procedure

To a solution of (2R,5S)-2-hydroxymethyl-5-(3-trifluoromethoxy-phenylcarbamoyl)-pyrrolidine-1-carboxylic acid benzyl ester (500 mg, 1.14 mmol) in CH2Cl2 (5 mL) was added at 0° C. under nitrogen atmosphere Et3N (350 μl, 2.5 mmol) and mesylchloride (197 μl, 2.5 mmol) and the mixture was further stirred at RT for 3 h. CH2Cl2 and HCl 0.1N were added, the layers were separated and the aqueous one re-extracted with CH2Cl2. The crude organic extracts were washed with brine dried over Na2SO4, filtered and concentrated. The crude material was used without further purification in the next step. MS (LC-MS): 517 [MH−Boc]+; tR (HPLC conditions b) 5.15 min.

Workup

  1. customthe layers were separated
  2. extractionthe aqueous one re-extracted with CH2Cl2
  3. washThe crude organic extracts were washed with brine
  4. dry with materialdried over Na2SO4
  5. filtrationfiltered
  6. concentrationconcentrated
  7. customThe crude material was used without further purification in the next step
  8. customtR (HPLC conditions b) 5.15 min.

Sources & evidence

ORD record
ord-792331b9335c421caf94d5b573852550
Source dataset
uspto-grants-2015_07
Patent number
US09085555B2

Reaction notes

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