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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 328384Generated: October 30, 2026

Pyruvic Acid → 7-chloro-2-[(1-carboxyethylidene)hydrazino]-5-phenyl-3H-1,4-benzodiazepine

https://huagongshe.com/reaction/328384

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPyruvic AcidHCID 1060—
Reactant7-Chloro-2-hydrazinyl-5-phenyl-3H-1,4-benzodiazepineHCID 12390874—
SolventTetrahydrofuranHCID 8028—
Product7-chloro-2-[(1-carboxyethylidene)hydrazino]-5-phenyl-3H-1,4-benzodiazepineHCID 54054180—

Reaction Steps

To a solution of 2.85 g. (0.01 mole) of 7-chloro-2-hydrazino-5-phenyl-3H-1,4-benzodiazepine in 100 ml. of tetrahydrofuran under nitrogen is added with stirring, 0.847 ml. (0.012 mole) of pyruvic acid. After 2.5 hours at room temperature and overnight at 0° C. 7-chloro-2-[(1-carboxyethylidene)hydrazino]-5-phenyl-3H-1,4-benzodiazepine is obtained.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04017492
Source datasetuspto-grants-1977_04
ORD IDord-99b632f3833f41ef92f6bbc9b6a487b8
Source noteuspto-grants-1977_04