Methyl 4-chloro-3-nitrobenzoate → Methyl 4-(methylsulfanyl)-3-nitrobenzenecarboxylate

HRID 1584929Notes

Reaction equation

HRID 1584929 reaction equation
Cl[C:2]1[CH:11]=[CH:10][C:5]([C:6]([O:8][CH3:9])=[O:7])=[CH:4][C:3]=1[N+:12]([O-:14])=[O:13].[CH3:15][S-:16].[Na+]>CC(C)=O>[CH3:15][S:16][C:2]1[CH:11]=[CH:10][C:5]([C:6]([O:8][CH3:9])=[O:7])=[CH:4][C:3]=1[N+:12]([O-:14])=[O:13]

Participants

4

Reactant 2

HCID 735797Methyl 4-chloro-3-nitrobenzoateHCID 4378561Sodium methanethiolate

Product 1

HCID 21187831Methyl 4-(methylsulfanyl)-3-nitrobenzenecarboxylateYield 62.7%

Reagents, catalysts & solvents 1

HCID 180AcetoneSolvent

Procedure

A solution of methyl 4-chloro-3-nitrobenzoate (28 g) in acetone (250 mL) is treated portionwise with sodium thiomethoxide (10 g) and the mixture is stirred overnight at room temperature. After filtration, the solution is concentrated and water (300 mL) is added to the residue. The yellow solid is filtered off and subjected to flash chromatography eluting with a mixture of diethyl ether and pentane (1:4 v/v), to give methyl 4-methylthio-3-nitrobenzoate (18.5 g), in the form of a yellow solid, m.p. 118-120° C.

Workup

  1. filtrationAfter filtration
  2. concentrationthe solution is concentrated
  3. additionwater (300 mL) is added to the residue
  4. filtrationThe yellow solid is filtered off
  5. washeluting with a mixture of diethyl ether and pentane (1:4 v/v)

Sources & evidence

ORD record
ord-405a58c174f44482896b44c441324b9c
Source dataset
uspto-grants-1999_08
Patent number
US05935978

Reaction notes

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