Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 867433Generated: October 25, 2026

2-Butynedioic acid → [3-Pentyl-2-(pentylimino)-4-oxo-5-thiazolidinylidene]acetic acid

https://huagongshe.com/reaction/867433

Reaction equation

Participants

RoleNameHCIDCharge
Reactant2-Butynedioic acidHCID 371—
ReactantN,N'-dipentylthioureaHCID 10751225—
Product[3-Pentyl-2-(pentylimino)-4-oxo-5-thiazolidinylidene]acetic acidHCID 5407966344%

Reaction Steps

Prepared by the method described in Example 1 from N,N'-dipentylthiourea (31.4 g, 150 mmoles) and acetylenedicarboxylic acid (17.1 g, 150 mmoles). Recrystallization from acetonitrile gave the product (20.6 g), mp 85°-88° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04775677
Source datasetuspto-grants-1988_10
ORD IDord-5a7e34759ad941ec9e2d25cf28f95ecd
Source noteuspto-grants-1988_10