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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1460551Generated: November 4, 2026

2,3-Dihydroxybutanedioic Acid → HCID 88527765, compound

https://huagongshe.com/reaction/1460551

Reaction equation

Participants

RoleNameHCIDCharge
Reactant2,3-Dihydroxybutanedioic AcidHCID 875—
ReactantWaterHCID 962—
Reactant1,2,3,6-Tetrahydro-4-phenylpyridineHCID 82553—
ReactantHCID 4152550HCID 4152550—
SolventMethanolHCID 887—
ProductHCID 88527765HCID 88527765—

Reaction Conditions

Temperature120 °C

Reaction Steps

20 mmol of 2-amino-5-(2-chloroethyl)-4-phenylthiazole and 20 mmol of 4-phenyl-1,2,3,6-tetrahydropyridine were thoroughly mixed and were heated under an N2 atmosphere at 120° C. until conversion was complete, which was the case after 20 minutes. After cooling, the solidified melt was stirred with water, the oily solid residue was separated off and stirred thoroughly with methanol and the solid was filtered off under suction. The filter residue was partitioned in 2 N NaOH/CH2Cl2 and the organic phase was separated off, dried and evaporated down. The residue was dissolved in methanol while hot, one equivalent of tartaric acid was added and the precipitated solid was filtered off under suction and purified by recrystallization from ethyl acetate.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05071864
Source datasetuspto-grants-1991_12
ORD IDord-5aae88503a7249d39c480b52c37343cb
Source noteuspto-grants-1991_12