55753-69-0

Upstream product

• 555-16-8 4-nitrobenzaldehdye 
• 5351-69-9 4-Phenyl-3-thiosemicarbazide 
• 103-72-0 phenyl isothiocyanate 

Downstream Products

• 1470070-99-5 C₂₈H₂₀N₄O₂S 
• 55753-64-5 2-(4-nitro-benzylidenehydrazono)-3-phenyl-N'-p-tolyl-2,3-dihydro-thiazole-4-carbohydrazonoyl chloride 
• 2951-14-6 4-methyl-2-(4-nitro-benzylidenehydrazono)-3-phenyl-2,3-dihydro-thiazole-5-carboxylic acid ethyl ester 
• 3673-45-8 4-nitrobenzaldehyde 2-(2-benzothiazolyl)hydrazone 
• 55753-63-4 2-(4-nitro-benzylidenehydrazono)-3,N'-diphenyl-2,3-dihydro-thiazole-4-carbohydrazonoyl chloride 
• 118836-82-1 4-nitro-benzaldehyde diacetylhydrazone 

Relevant academic research and scientific papers

Efficient synthesis of novel 2,3-dihydro-1,3,5,4-thiadiazaphosphole derivatives

ABSTRACT: The condensation of various thiosemicarbazones with methyl thiophene-2-carboximidate afforded the corresponding intermediates 2a–2h. Subsequent cyclization of the latter compounds with hexamethylphosphorous triamide constitutes a new route to the synthesis of novel highly functionalized thiadiazaphosphole derivatives 4a–4h. This method offers significant advantages such as efficiency, high yields and mild reaction conditions.

On the Reaction of Derivatives of Thiosemicarbazide with Bis-Imidochlorides of Oxalic Acid

Arylsubstituted oxalic bis-imidochlorides 1 react with thiosemicarbazones of type 5 as well as 13 to give five-membered-ring heterocycles 8, 11, and 16. 13C-NMR spectroscopy, chemical methods and X-ray crystallography have been used to investigate the nature of the structures obtained.The 13C-chemical shifts of 13 and imidazolidines 16 are correlated with Hammett ?p constants and dual substituent parameters to evaluate the transmission of the X substituent electronic effects via the side-chain iminyl carbon atom into the heterocyclic ring and its neighbouring phenyl groups. - Keywords. 13C-NMR, Derivatives of oxalic acid; DSP-Analysis; NS-Heterocycles; Thiosemicarbazones; X-Ray crystallography.