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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1058606Generated: November 2, 2026

Water → HCID 12851303, compound

https://huagongshe.com/reaction/1058606

Reaction equation

Participants

RoleNameHCIDCharge
ReactantWaterHCID 962—
ReactantTrityl chlorideHCID 6456—
ReactantTriethylamineHCID 8471—
ReactantEthyl 4-piperidinecarboxylateHCID 70770—
SolventDichloromethaneHCID 6344—
ProductHCID 12851303HCID 1285130394.6%

Reaction Steps

To a solution of 76.5 g of ethyl isonipecotate and 81.5 ml of triethylamine in 750 ml of methylene chloride, 149 g of triphenylmethyl chloride dividied in three portions was added portionwise at room temperature, and the mixture was stirred for 16 hours. The reaction mixture was added with water and extracted with methylene chloride. The extract was washed successively with water and saturated brine, and dried, and then the solvent was evaporated. The resulting brown liquid was added with diisopropyl ether, and the precipitated crystals were collected by filtration and washed with diisopropyl ether to give 184 g of pale yellow crystals. Recrystallization from ethanol gave colorless prisms having the melting point of from 147.5 to 148.5° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06518265B1
Source datasetuspto-grants-2003_02
ORD IDord-24546867800b414abe166b49cf748b80
Source noteuspto-grants-2003_02