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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 867435Generated: October 25, 2026

2-Butynedioic acid → [4-Oxo-3-(3,4,5-trimethoxyphenyl)-2-[(3,4,5-trimethoxyphenyl)imino]-5-thiazolidinylidene]acetic acid

https://huagongshe.com/reaction/867435

Reaction equation

Participants

RoleNameHCIDCharge
Reactant2-Butynedioic acidHCID 371—
ReactantN,N'-bis(3,4,5-trimethoxyphenyl)thioureaHCID 17312812—
Product[4-Oxo-3-(3,4,5-trimethoxyphenyl)-2-[(3,4,5-trimethoxyphenyl)imino]-5-thiazolidinylidene]acetic acidHCID 5394291457.1%

Reaction Steps

Prepared by the method described in Example 1 from N,N'-bis(3,4,5-trimethoxyphenyl)thiourea (26.8 g, 66 mmoles) and acetylenedicarboxylic acid (9.8 g, 86 mmoles). Recrystallization from ethanol gave the product (19 g), mp 250°-252° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04775677
Source datasetuspto-grants-1988_10
ORD IDord-4de4dc64f39d40899dd594cad10ead30
Source noteuspto-grants-1988_10