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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2296899Generated: October 25, 2026

Acetic Anhydride → Ethyl 1-ethyl-3-pyrrolecarboxylate

https://huagongshe.com/reaction/2296899

Reaction equation

Participants

RoleNameHCIDCharge
ReactantAcetic AnhydrideHCID 7918—
ReactantEthyl propiolateHCID 12182—
ReactantN-formylsarcosineHCID 11789184—
ProductEthyl 1-ethyl-3-pyrrolecarboxylateHCID 2273805871.3%

Reaction Steps

Using 117.1 g (1 mol) of N-formylsarcosine, 98.1 g (1 mol) of ethyl propiolate and 638 ml of acetic anhydride, a reaction and post treatment were conducted in a similar manner as in Referential Example 1. The resulting brown oil was distilled under reduced pressure and a 103-104° C. fraction was collected under 4 mmHg, whereby 109.19 g of the title compound were obtained (yield: 71.3%).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06489473B2
Source datasetuspto-grants-2002_12
ORD IDord-d50b6a4da6414798a3254568794e442f
Source noteuspto-grants-2002_12