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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1605192Generated: October 31, 2026

Dicyclohexylcarbodiimide → N-(1-Methylcyclobutyloxycarbonyl)-Aspartic Anhydride

https://huagongshe.com/reaction/1605192

Reaction equation

Participants

RoleNameHCIDCharge
ReactantDicyclohexylcarbodiimideHCID 10868—
ReactantN-(1-methylcyclobutyloxycarbonyl) aspartic acidHCID 54120717—
Solvent1,4-DioxaneHCID 31275—
ProductN-(1-Methylcyclobutyloxycarbonyl)-Aspartic AnhydrideHCID 54330780—

Reaction Conditions

Temperature25 °C

Reaction Steps

A solution of 2.45 g. of N-(1-methylcyclobutyloxycarbonyl)-aspartic acid in 50 ml. of dioxane is prepared and 2.2 g. of dicyclohexylcarbodiimide is added with vigorous stirring. After stirring at 25°C. for 2 hours, the dicyclohexylurea is removed by filtration and the dioxane removed by evaporation in vacuo. The resulting solid is substantially pure N-(1-methylcyclobutyloxycarbonyl)-aspartic anhydride.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS03948971
Source datasetuspto-grants-1976_04
ORD IDord-8d14d03cac0a414181a57490d0193c1f
Source noteuspto-grants-1976_04