Triethylamine → (2S,4S)-2-mesyloxymethyl-N-(p-nitrobenzyloxycarbonyl)-4-tritylthiopyrrolidine

HRID 1650820Notes

Reaction equation

HRID 1650820 reaction equation
[OH:1][CH2:2][C@@H:3]1[CH2:7][C@H:6]([S:8][C:9]([C:22]2[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=2)([C:16]2[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=2)[C:10]2[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=2)[CH2:5][N:4]1[C:28]([O:30][CH2:31][C:32]1[CH:37]=[CH:36][C:35]([N+:38]([O-:40])=[O:39])=[CH:34][CH:33]=1)=[O:29].[CH3:41][S:42](Cl)(=[O:44])=[O:43].C(N(CC)CC)C>ClCCl>[CH3:41][S:42]([O:1][CH2:2][C@@H:3]1[CH2:7][C@H:6]([S:8][C:9]([C:16]2[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=2)([C:22]2[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=2)[C:10]2[CH:11]=[CH:12][CH:13]=[CH:14][CH:15]=2)[CH2:5][N:4]1[C:28]([O:30][CH2:31][C:32]1[CH:37]=[CH:36][C:35]([N+:38]([O-:40])=[O:39])=[CH:34][CH:33]=1)=[O:29])(=[O:44])=[O:43]

Participants

5

Reactant 3

HCID 8471TriethylamineHCID 31297Methanesulfonyl chlorideHCID 15056118(2S,4S)-2-hydroxymethyl-N-(p-nitrobenzyloxycarbonyl)-4-tritylthiopyrrolidine

Product 1

HCID 15056119(2S,4S)-2-mesyloxymethyl-N-(p-nitrobenzyloxycarbonyl)-4-tritylthiopyrrolidine

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a solution of (2S,4S)-2-hydroxymethyl-1-(4-nitrobenzyloxycarbonyl)-4-(triphenylmethylthio)pyrrolidine (10.7 g) in dichloromethane (100 ml) were added methanesulfonyl chloride (1.44 ml) and triethylamine (3.06 ml) under ice-cooling, and the mixture was stirred at the same temperature for 1 hour. The reaction mixture was washed with saturated aqueous sodium chloride, dried over magnesium sulfate and evaporated in vacuo to give a residue The residue was chromatographed on silica gel (150 g) eluting with a mixture of dichloromethane and acetone (40:1 V/V). The fractions containing the desired compound were collected and evaporated in vacuo to give (2S,4S)-2-(methanesulfonyloxy)methyl-1-(4-nitrobenzyloxycarbonyl)-4-(triphenylmethylthio)pyrrolidine (10.39 g).

Workup

  1. temperaturecooling
  2. washThe reaction mixture was washed with saturated aqueous sodium chloride
  3. dry with materialdried over magnesium sulfate
  4. customevaporated in vacuo
  5. customto give a residue The residue
  6. customwas chromatographed on silica gel (150 g)
  7. washeluting with a mixture of dichloromethane and acetone (40:1 V/V)
  8. additionThe fractions containing the desired compound
  9. customwere collected
  10. customevaporated in vacuo

Sources & evidence

ORD record
ord-a62a19c65ab04c48ba0afc94bd961746
Source dataset
uspto-grants-1990_05
Patent number
US04925838

Reaction notes

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