Dichloromethane → (1S,3S,4S)-3-{[tert-butyl(dimethyl)silyl]oxy}-4-({[tert-butyl(dimethyl)silyl]oxy}methyl)cyclopentyl methanesulfonate

HRID 1747686Notes

Reaction equation

HRID 1747686 reaction equation
[Si:1]([O:8][C@@H:9]1[C@H:13]([CH2:14][O:15][Si:16]([C:19]([CH3:22])([CH3:21])[CH3:20])([CH3:18])[CH3:17])[CH2:12][C@H:11]([OH:23])[CH2:10]1)([C:4]([CH3:7])([CH3:6])[CH3:5])([CH3:3])[CH3:2].C(Cl)Cl.C(N(CC)CC)C.[CH3:34][S:35](Cl)(=[O:37])=[O:36]>>[CH3:34][S:35]([O:23][C@H:11]1[CH2:12][C@@H:13]([CH2:14][O:15][Si:16]([C:19]([CH3:22])([CH3:21])[CH3:20])([CH3:17])[CH3:18])[C@@H:9]([O:8][Si:1]([C:4]([CH3:7])([CH3:6])[CH3:5])([CH3:3])[CH3:2])[CH2:10]1)(=[O:37])=[O:36]

Participants

5

Reactant 4

HCID 6344DichloromethaneHCID 8471TriethylamineHCID 31297Methanesulfonyl chlorideHCID 66798071(1S,3S,4S)-3-{[tert-butyl(dimethyl)silyl]oxy}-4-({[tert-butyl-(dimethyl)silyl]oxy}methyl)cyclopentanol

Product 1

HCID 86618736(1S,3S,4S)-3-{[tert-butyl(dimethyl)silyl]oxy}-4-({[tert-butyl(dimethyl)silyl]oxy}methyl)cyclopentyl methanesulfonate

Conditions

Temperature
0 °C

Procedure

To a solution of (1S,3S,4S)-3-{[tert-butyl(dimethyl)silyl]oxy}-4-({[tert-butyl-(dimethyl)silyl]oxy}methyl)cyclopentanol (2.02 g, 0.00560 mol) in CH2Cl2 (55.0 mL, 0.858 mol) at 0° C. was added triethylamine (1.8 mL, 0.013 mol) and methanesulfonyl chloride (0.650 mL, 0.00840 mol) under an atmosphere of nitrogen. The mixture was stirred at 0° C. for 30 minutes, and then warmed to 23° C. for 1 hour. The reaction was quenched by addition of saturated aqueous sodium bicarbonate, extracted with DCM, dried (Na2SO4), filtered and concentrated to give 2.66 g (100%).

Workup

  1. temperaturewarmed to 23° C. for 1 hour
  2. customThe reaction was quenched by addition of saturated aqueous sodium bicarbonate
  3. extractionextracted with DCM
  4. dry with materialdried (Na2SO4)
  5. filtrationfiltered
  6. concentrationconcentrated
  7. customto give 2.66 g (100%)

Sources & evidence

ORD record
ord-0ff203c8172842079f5cd22bda5c1bb7
Source dataset
uspto-grants-2015_10
Patent number
US09150525B2

Reaction notes

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