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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 364334Generated: October 25, 2026

Dichloromethane → HCID 13349252, compound

https://huagongshe.com/reaction/364334

Reaction equation

Participants

RoleNameHCIDCharge
ReactantDichloromethaneHCID 6344—
ReactantHCID 13349246HCID 13349246—
ReactantDiethyl aluminum chlorideHCID 16686102—
CatalystPhosphoric AcidHCID 1004—
SolventEthyl AcetateHCID 8857—
ProductHCID 13349252HCID 1334925290%

Reaction Conditions

Temperature0 °C

Reaction Steps

After 0.63 ml (0.63 mmol) of diethylaluminum chloride (hexane 1M solution) were added to a dried methylene chloride (3 ml) solution of 89.7 mg (0.24 mmol) of (S)-2-methanesulfonyloxy-3-octyl-3-undecanol (unrefined) at -78° C. under stirring, and stirred for two and a half hours at -78° C., the temperature was raised to 0° C. over an hour and a half. The reaction was stopped with three drops of phosphoric acid buffer solution (pH 7). The resultant suspension was diluted with ethyl acetate, dried with anhydrous sodium sulfate, filtered and concentrated. The oily residue was separated and refined by the use of silica gel column chromatography (hexane/ethyl acetate=35/1) to obtain (S)-10-methyl-9-octadecanone as a colorless oily substance (60.5 mg, yield 90%).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04604486
Source datasetuspto-grants-1986_08
ORD IDord-524551429d3e4fc2bae4047df7efb279
Source noteuspto-grants-1986_08