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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2219881Generated: November 4, 2026

1-Ethyl-3-(3'-dimethylaminopropyl)carbodiimide → (R)-2-(4-methylbenzenesulfonamido)pent-4-ynamide

https://huagongshe.com/reaction/2219881

Reaction equation

Participants

RoleNameHCIDCharge
Reactant1-Ethyl-3-(3'-dimethylaminopropyl)carbodiimideHCID 15908—
ReactantAmmonium ChlorideHCID 25517—
ReactantDiisopropylethylamineHCID 81531—
ReactantHOAtHCID 181649—
Reactant(R)-2-(4-methylbenzenesulfonamido)pent-4-ynoic acidHCID 10978432—
SolventWaterHCID 962—
SolventDimethylformamideHCID 6228—
Product(R)-2-(4-methylbenzenesulfonamido)pent-4-ynamideHCID 86604882—

Reaction Steps

A mixture of (R)-2-(4-methylphenyl sulfonamido)pent-4-ynoic acid (1.0 g, 3.7 mmol), HOAt (0.76 g, 5.6 mmol), iPr2NEt (2.17 g, 16.9 mmol), NH4Cl (0.6 g, 11 mmol), and EDCI (1.07 g, 5.61 mmol) in 20 mL DMF was stirred for 18 h at RT. Water was added, which caused a precipitate to form. The white solid was filtered and air dried to afford the title compound. MS (m/z, m+1): 267.3.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07414134B2
Source datasetuspto-grants-2008_08
ORD IDord-1dd3279a79fe422c93fd7891c6e3bdaf
Source noteuspto-grants-2008_08