tert-Butyl mercaptan → Ethyl 4-(tert-butylthio)-3-oxobutanoate

HRID 1948887Notes

Reaction equation

HRID 1948887 reaction equation
Cl[CH2:2][C:3](=[O:10])[CH2:4][C:5]([O:7][CH2:8][CH3:9])=[O:6].[CH3:11][C:12]([SH:15])([CH3:14])[CH3:13].C(N(CC)CC)C>[Br-].C([N+](CCCC)(CCCC)CCCC)CCC.C1COCC1>[CH2:8]([O:7][C:5](=[O:6])[CH2:4][C:3](=[O:10])[CH2:2][S:15][C:12]([CH3:14])([CH3:13])[CH3:11])[CH3:9]

Participants

6

Reactant 3

HCID 6387tert-Butyl mercaptanHCID 8471TriethylamineHCID 69484Ethyl 4-chloroacetoacetate

Product 1

HCID 10465978Ethyl 4-(tert-butylthio)-3-oxobutanoate

Reagents, catalysts & solvents 2

HCID 74236Tetrabutylammonium BromideCatalystHCID 8028TetrahydrofuranSolvent

Procedure

Ethyl 4-chloroacetoacetate (7.5 mL, 51.9 mmol), 2-methyl-2-propanethiol (5.6 mL, 49.7 mmol), triethylamine (10.8 mL, 77.4 mmol), and catalytic tetrabutylammonium bromide were dissolved in THF (250 mL) and stirred at room temperature overnight. Silica gel was added, and the mixture was concentrated and filtered over a plug of silica gel to obtain the desired product (B-1), which was used without further purification.

Workup

  1. additionSilica gel was added
  2. concentrationthe mixture was concentrated
  3. filtrationfiltered over a plug of silica gel

Sources & evidence

ORD record
ord-5ec9328f963847768482c3c278621ee9
Source dataset
uspto-grants-2013_03
Patent number
US08399666B2

Reaction notes

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