1,4-dihydro-4-methyl-3-phenylpyrazolo<4,3-c>-<1,2>-benzothiazine 5,5-dioxide

Base Information

• Chemical Name: 1,4-dihydro-4-methyl-3-phenylpyrazolo<4,3-c>-<1,2>-benzothiazine 5,5-dioxide
• CAS No.: 17833-87-3
• Molecular Formula: C₁₆H₁₃N₃O₂S
• Molecular Weight: 311.364

Synonyms:1,4-dihydro-4-methyl-3-phenylpyrazolo<4,3-c>-<1,2>-benzothiazine 5,5-dioxide

Chemical Property of 1,4-dihydro-4-methyl-3-phenylpyrazolo<4,3-c>-<1,2>-benzothiazine 5,5-dioxide

Chemical Property:

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Technology Process of 1,4-dihydro-4-methyl-3-phenylpyrazolo<4,3-c>-<1,2>-benzothiazine 5,5-dioxide

There total 15 articles about 1,4-dihydro-4-methyl-3-phenylpyrazolo<4,3-c>-<1,2>-benzothiazine 5,5-dioxide which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 93.0%

(4-hydroxy-2-methyl-1,1-dioxo-1,2-dihydro-1λ6-benzo[e][1,2]thiazin-3-yl)-phenyl-methanone (106345-99-7) → 4-methyl-3-phenyl-2,4-dihydrobenzo[e]pyrazolo[4,3-c][1,2]thiazine 5,5-dioxide (1421740-44-4,17833-87-3)

Guidance literature:

With hydrazine hydrate; In ethanol; for 2h; Reflux;

DOI:10.1002/jhet.2013

Reference yield: 87.0%

(4-hydroxy-2-methyl-1,1-dioxo-1,2-dihydro-1λ6-benzo[e][1,2]thiazin-3-yl)-phenyl-methanone (106345-99-7) → 1,4-dihydro-4-methyl-3-phenylpyrazolo<4,3-c>-<1,2>-benzothiazine 5,5-dioxide (17833-87-3)

Guidance literature:

With hydrazine hydrate; In ethanol; for 0.333333h; Microwave irradiation; Reflux;

DOI:10.1007/s00044-013-0879-7

Reference yield: 65.0%

1,2,3,4-tetrahydro-4-methyl-3-phenylpyrazolo<4,3-c>-<1,2>-benzothiazine 5,5-dioxide (106346-08-1) → 1,4-dihydro-4-methyl-3-phenylpyrazolo<4,3-c>-<1,2>-benzothiazine 5,5-dioxide (17833-87-3)

Guidance literature:

With sodium hydroxide; potassium hexacyanoferrate(III); In 1,4-dioxane; for 4h; Ambient temperature;

upstream raw materials:

1,2,3,4-tetrahydro-4-methyl-3-phenylpyrazolo<4,3-c>-<1,2>-benzothiazine 5,5-dioxide

3-benzoyl-2,3-dihydro-2-methyl-1,2-benzothiazin-4-one 1,1-dioxide

1,2,3,3a,4,9b-hexahydro-4-methyl-3-phenylpyrazolo<4,3-c>-<1,2>benzothiazin-9b-ol 5,5-dioxide

3-benzoyl-4-benzyloxy-2-methyl-2H-1,2-benzothiazine 1,1-dioxide

Downstream raw materials:

2-(4-methyl-5,5-dioxido-3-phenylbenzo[e]pyrazolo[4,3-c][1,2]thiazin-1(4H)-yl)acetohydrazide

N'-(4-bromobenzylidene)-2-(4-methyl-5,5-dioxido-3-phenylbenzo[e]pyrazolo[4,3-c][1,2]thiazin-1(4H)-yl)acetohydrazide

N'-(2,6-dichlorobenzylidene)-2-(4-methyl-5,5-dioxido-3-phenylbenzo[e]pyrazolo[4,3-c][1,2]thiazin-1(4H)-yl)acetohydrazide

N'-(4-chlorobenzylidene)-2-(4-methyl-5,5-dioxido-3-phenylbenzo[e]pyrazolo[4,3-c][1,2]thiazin-1(4H)-yl)acetohydrazide

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