Water → 1-(tert-Butoxycarbonyl)-4-(methanesulfonyloxy)piperidine

HRID 2266704Notes

Reaction equation

HRID 2266704 reaction equation
[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][CH:11]([OH:14])[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].CCN(CC)CC.[CH3:22][S:23](Cl)(=[O:25])=[O:24].O>C(Cl)Cl.CN(C1C=CN=CC=1)C>[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][CH:11]([O:14][S:23]([CH3:22])(=[O:25])=[O:24])[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:2])[CH3:3]

Participants

7

Reactant 4

HCID 962WaterHCID 8471TriethylamineHCID 31297Methanesulfonyl chlorideHCID 643502Tert-butyl 4-hydroxypiperidine-1-carboxylate

Product 1

HCID 41848691-(tert-Butoxycarbonyl)-4-(methanesulfonyloxy)piperidineYield 99.8%

Reagents, catalysts & solvents 2

HCID 142844-(Dimethylamino)pyridineCatalystHCID 6344DichloromethaneSolvent

Procedure

To a stirred solution of 4-hydroxy-piperidine-1-carboxylic acid tert-butyl ester (7.94 g, 39.45 mmol) in CH2Cl2 (100 mL), cooled to 0° C., was slowly added NEt3 (5.54 mL, 39.45 mmol) followed by methane sulfonyl chloride (3.06 mL, 39.45 mmol) and DMAP (48 mg, 0.39 mmol). The mixture was stirred at room temperature overnight. To the mixture was added water (30 mL). Extraction with CH2Cl2 (3×30 mL) followed by drying (Na2SO4) and removal of the solvent in vacuo afforded 4-methanesulfonyloxy-piperidine-1-carboxylic acid tert-butyl ester as a white solid (11.00 g, >99% yield). 1H NMR (CDCl3, 400 MHz) δ 4.89 (m, 1H), 3.69 (m, 2H), 3.31 (m, 2H), 3.04 (s, 3H), 1.95 (m, 2H), 1.83 (m, 2H), 1.46 (s, 9H).

Workup

  1. extractionExtraction with CH2Cl2 (3×30 mL)
  2. customby drying
  3. custom(Na2SO4) and removal of the solvent in vacuo

Sources & evidence

ORD record
ord-ba4a5f0a71344ec7bf96072ece09f7c4
Source dataset
uspto-grants-2010_12
Patent number
US07858643B2

Reaction notes

Loading…