136209-82-0

Upstream product

• 136209-86-4 1-(4-Chloro-phenyl)-2-(dimethyl-hydrazono)-ethanethione 
• 4996-21-8 1-(4-chloro-phenyl)-2,2-dihydroxy-ethanone 
• 24346-19-8 4-chloro-α-oxo-benzeneacetaldehyde, aldehydo-(dimethylhydrazone) 
• 136209-78-4 1-[6-(4-Chloro-phenyl)-4-dimethylamino-3,4-dihydro-2H-[1,4]thiazin-3-yl]-ethanone 

Relevant academic research and scientific papers

FORMATION DE 2H-1,4-THIAZINES, 2-BENZYLTHIAZOLES ET 2-BENZOYLTHIAZOLES PAR ACTION DE LA SILICE SUR LES 4-AMINO-3,4-DIHYDRO-2H-1,4-THIAZINES

In the presence of silica, 4-dimethylamino-3,4-dihydro-2H-1,4-thiazines 1 afford 2H-1,4-thiazines 2 with good yields, 2-benzyl-4-methoxycarbonylthiazoles 3 or 2-aroyl-4-methoxycarbonylthiazoles 4 depending on substituents bound to the thiazinic cycle and experimental conditions.As for 2H-1,4-thiazines 2, they give rise to bisthiazines by a duplication reaction. Key words: 2-(Dialkylhydrazono)thioacetophenones; 3,4-dihydro-2H-1,4-thiazines; 2H-1,4-thiazines; 2-benzyl-4-methoxycarbonylthiazoles; 2-aroyl-4-methoxycarbonylthiazoles.

The heteroatomic chains and their derived cyclic products XI. A synthesis of 2-(dialkylhydrazone)thioacetophenones as agents in the preparation of 3,4-dihydro-2H-1,4-thiazines and 2H-1,4-thiazines.

We describe the preparation of 2-(dialkylhydrazone)-thioacetophenones starting from their oxygenated analogs. These compounds are used as building blocks in heterocyclic chemistry and lead to 3,4-dihydro-2H-1,4-thiazines or 2H-1,4-thiazines.