157332-73-5

Upstream product

• 914401-84-6 C₁₄H₁₃ClN₂O 
• 157332-78-0 (4-chlorophenyl)-(1-methyl-1H-benzotriazole-6-yl)methanone 
• 914401-83-5 C₁₄H₁₁ClN₂O₃ 
• 914401-82-4 C₁₅H₁₂ClN₃O₂ 
• 140-53-4 p-chlorobenzyl cyanide 
• 35966-84-8 4-chloro-2-methylaminonitrobenzene 

Relevant academic research and scientific papers

Development summary towards a manufacturable process for R 83842 [(S)-6-[(4-chlorophenyl) (1H-1,2,4-triazol-1-yl)methyl]-1-methyl-1H-benzotriazole]

A scalable process to produce enantiomeric R 83842, (S)-6-[(4-chlorophenyl)(1H-1,2,4-triazol-1-yl)methyl]-1-methyl-1H-benzotriazole, is developed and described as a lecture * transcript. Cheap and safe reagents have been used. A typical procedure for oxidative destruction of aqueous cyanide waste, and stability data on N-acetyl hydrazine are provided. Special focus is on cost analysis as an important tool in developing performant synthetic methods. The method consists of preparing a chiral monosubstituted hydrazine which is ring closed to the chiral 1-alkylated 1,2,4-triazole title compound.

Process for preparing enantiomerically pure 6-[(4-chlorophenyl) (1H-1,2,4-triazol-1-yl) methyl]-1-methyl-1H-benzotrizole

A process for preparing (+)-6-[(4-chlorophenyl)(1H-1,2,4-triazol-1-yl)methyl]-1-methyl-1H-benzotriazole comprising the resolution of (±)-6-[(4-chlorophenyl)-hydrazinomethyl)-1-methyl-1H-benzotriazole and converting the appropriate enantiomerically pure hy