Dimethyl Sulfate → 1-[2-(2,6-Diethyl-4-methylphenyl)-2-oxoacetyl]-1-methyl-2-(phenylmethylidene)hydrazine

HRID 335472Notes

Reaction equation

[CH2:1]([C:3]1[CH:8]=[C:7]([CH3:9])[CH:6]=[C:5]([CH2:10][CH3:11])[C:4]=1[C:12](=[O:24])[C:13]([NH:15][N:16]=[CH:17][C:18]1[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=1)=[O:14])[CH3:2].S(OC)(O[CH3:29])(=O)=O.C(=O)([O-])[O-].[K+].[K+]>C1(C)C=CC=CC=1.O>[CH2:1]([C:3]1[CH:8]=[C:7]([CH3:9])[CH:6]=[C:5]([CH2:10][CH3:11])[C:4]=1[C:12](=[O:24])[C:13]([N:15]([CH3:29])[N:16]=[CH:17][C:18]1[CH:19]=[CH:20][CH:21]=[CH:22][CH:23]=1)=[O:14])[CH3:2]

Participants

Conditions

Temperature: 5 °C

Procedure

To a 25 mL volume two-necked flask, 500 mg of 1-[2-(2,6-diethyl-4-methylphenyl)-2-oxoacetyl]-2-(phenylmethylidene)hydrazine ((40-a)-(14)-6), 2.3 ml of toluene, 345 mg of dimethyl sulfate and 315 mg of potassium carbonate were added and the mixture was stirred at 5° C. for 24 hours. To the reaction mixture, 2 ml of water and 2.3 ml of toluene were added and the resultant was extracted. Further, the aqueous layer was extracted with 2.5 ml of toluene two times. The organic layers were combined, concentrated under reduced pressure and subjected to column chromatography (hexane:ethyl acetate=5:1) to give 411 mg of 1-[2-(2,6-diethyl-4-methylphenyl)-2-oxoacetyl]-1-methyl-2-(phenylmethylidene)hydrazine ((40-b)-(15)-5).

Workup

extractionthe resultant was extracted
extractionFurther, the aqueous layer was extracted with 2.5 ml of toluene two times
concentrationconcentrated under reduced pressure

Sources & evidence

ORD record: ord-64c32bf53fb243af82665780c934dd9f
Source dataset: uspto-grants-2014_11
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08884010B2

Reaction notes

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