1-(tert-Butoxycarbonyl)-4-(methanesulfonyloxy)piperidine → Tert-butyl 4-(methylthio)piperidine-1-carboxylate

HRID 350717Notes

Reaction equation

HRID 350717 reaction equation
CS(O[CH:6]1[CH2:11][CH2:10][N:9]([C:12]([O:14][C:15]([CH3:18])([CH3:17])[CH3:16])=[O:13])[CH2:8][CH2:7]1)(=O)=O.[Na].[CH3:20][SH:21]>[I-].C([N+](CCCC)(CCCC)CCCC)CCC.O1CCCC1>[CH3:20][S:21][CH:6]1[CH2:7][CH2:8][N:9]([C:12]([O:14][C:15]([CH3:16])([CH3:17])[CH3:18])=[O:13])[CH2:10][CH2:11]1

Participants

5

Reactant 2

HCID 41848691-(tert-Butoxycarbonyl)-4-(methanesulfonyloxy)piperidineHCID 45051789Methylmercaptan sodium

Product 1

HCID 11053478Tert-butyl 4-(methylthio)piperidine-1-carboxylate

Reagents, catalysts & solvents 2

HCID 67553Tetrabutylammonium IodideCatalystHCID 8028TetrahydrofuranSolvent

Procedure

A mixture of tert-butyl 4-(methylsulfonyl)oxypiperidine-1-carboxylate (12.5 g), methylmercaptan sodium salt (3.31 g), tetra-n-butylammonium iodide (1.66 g) and tetrahydrofuran (50 mL) was stirred at room temperature for 72 hrs. The insoluble material was filtered through celite and the filtrate was concentrated. The residue was subjected to silica gel column chromatography, and tert-butyl 4-(methylthio)piperidine-1-carboxylate was obtained as a colorless oil from a fraction eluted with ethyl acetate-hexane (1:4, volume ratio) (6.89 g, yield 67%).

Workup

  1. filtrationThe insoluble material was filtered through celite
  2. concentrationthe filtrate was concentrated

Sources & evidence

ORD record
ord-5c841c5f7ea6479d82cc695701509b8b
Source dataset
uspto-grants-2007_02
Patent number
US07183276B2

Reaction notes

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