33314-38-4

Upstream product

• 18076-30-7 3,4,5-triphenylpyrazole 
• 133406-40-3 2-methyl-3,5,6-triphenyl-2,5-dihydro-1,2,4-triazinium chloride 
• 81933-66-6 2-methyl-3,5,6-triphenyl-2,5-dihydro-1,2,4-triazine 
• 501-65-5 diphenyl acetylene 
• 85636-43-7 N-methyl-N-(phenylsulfonyl)benzohydrazonoyl chloride 
• 53870-17-0 methyl 3,4,5-triphenyl-4H-pyrazole-4-carboxylate 
• 37469-28-6 3,5,6-triphenyl-2⁽⁴⁾,5-dihydro-1,2,4-triazine 
• 81933-67-7 4-methyl-3,5,6-triphenyl-4,5-dihydro-1,2,4-triazine 
• 24108-44-9 3,5,6-triphenyl-[1,2,4]triazine 
• 85636-44-8 1-benzoyl-2-methyl-2-phenylsulfonylhydrazine 
• 6631-28-3 N-benzenesulfonyl-N'-benzoylhydrazine 
• 59635-52-8 N-(phenylsulfonyl)benzohydrazonoyl chloride 
• 35313-61-2 methyl 3,3,5-triphenyl-3H-pyrazole-4-carboxylate 

Relevant academic research and scientific papers

Thermal and acid-catalyzed transformations of 3H-pyrazoles obtained from diphenyldiazomethane and methyl phenylpropiolate

Reaction of diphenyldiazomethane with methyl phenylpropiolate in diethyl ether alongside the expected methyl triphenyl-3H-pyrazole-4-and-5-carboxylates (I and II) (38 and 24%) gave rise also to 8% of methyl 3,5-diphenyl-1-(1- ethoxyethyl)-1H-pyrazole-4-ca

Photochemistry of N-heterocycles, 5: A comparison of chemical and photochemically induced reduction of some 2(4),5-dihydro-1,2,4-triazines and aromatic 1,2,4-triazines

Chemical reduction (Zn/AcOH) of the arene 1 and of 2(4),5-dihydro-1,2,4- triazine 7 has been reinvestigated, resulting in the amendment of literature data concerning this reaction. Chemical, electrochemical, and photochemically induced reductions and ring contractions of 1,2,4-triazine derivatives have been compared. The first example of a triaryl-1,4-dihydrotriazine has been prepared. Some further evidence is presented that supports the proposed mechanism of the photochemically induced reduction and ring contraction of 1,2,4-triazines.

Photochemistry of N-Heterocycles. Part 3. Synthesis and Photochemistry of some New Dihydro-1,2,4-triazines and their Quaternary Salts

Several new dihydro-1,2,4-triazines, 1b, 4, 5, 16 and 19, have been synthesized and their structures unambiguously determined.The existence of 1,2- and 1,4-dihydrotriazines, 20 and 22, described in the literature was ruled out.Irradiation of the aromatic triazines 6 and 15 and the novel quaternary dihydro-1,2,4-triazinium salts 4, 5, 19 furnished new evidence for both the reduction pathways and the mechanism of ring-contraction reactions.

PHOTOCHEMISTRY OF N-HETEROCYCLES. PART 1. SYNTHESIS AND PHOTOCHEMISTRY OF SOME 2(4),5-DIHYDRO-1,2,4-TRIAZINES. X-RAY MOLECULAR STRUCTURE OF 1-(4-METHYL-3,5,6-TRIPHENYL-1,4,5,6-TETRAHYDRO-1,2,4-TRIAZIN-6-YL)ETHANOL

Ethanolic solution of the hydrochlorides of the mostly new 2(4),5-dihydro-1,2,4-triazines (1)-(4) were irradiated with a high-pressure mercury immersion lamp (λ>=300 nm).The salts (1a)-(3a) underwent reductions, ring contractions, and dehydrogenations upo

N-Methyl-N-(phenylsulfonyl)benzohydrazonoyl Chloride as a Potential Intermediate for Nitrogen-heterocycles. Preparation of 1-Methyl-3-phenyl-1H-1,2,4-triazoles and -pyrazoles

3,5-Disubstituted 1-methyl-1H-1,2,4-triazoles and -pyrazoles were obtained in good to moderate yields by the reaction of N-methyl-N-(phenylsulfonyl)benzohydrazonoyl chloride with nitriles and with acetylenes in the presence of aluminum chloride.The triazo