(7-METHYL-5,6,7,8-TETRAHYDRO-BENZO[4,5]THIENO[2,3-D]PYRIMIDIN-4-YL)-HYDRAZINE

Base Information

• Chemical Name: (7-METHYL-5,6,7,8-TETRAHYDRO-BENZO[4,5]THIENO[2,3-D]PYRIMIDIN-4-YL)-HYDRAZINE
• CAS No.: 137438-24-5
• Molecular Formula: C₁₁H₁₄N₄S
• Molecular Weight: 234.325
• Mol file: 137438-24-5.mol

Synonyms:4-hydrazino-7-methyl-5,6,7,8-tetrahydrobenzothieno<2,3-d>pyrimidine

Chemical Property of (7-METHYL-5,6,7,8-TETRAHYDRO-BENZO[4,5]THIENO[2,3-D]PYRIMIDIN-4-YL)-HYDRAZINE

Chemical Property:

• Boiling Point: 455.0±55.0 °C(Predicted)
• PKA: 3.01±0.40(Predicted)
• Density: 1.57±0.1 g/cm3(Predicted)

Purity/Quality:

99% ^*data from raw suppliers

4-hydrazinyl-7-methyl-5,6,7,8-tetrahydrobenzo[4,5]thieno[2,3-d]pyrimidine ^*data from reagent suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of (7-METHYL-5,6,7,8-TETRAHYDRO-BENZO[4,5]THIENO[2,3-D]PYRIMIDIN-4-YL)-HYDRAZINE

There total 3 articles about (7-METHYL-5,6,7,8-TETRAHYDRO-BENZO[4,5]THIENO[2,3-D]PYRIMIDIN-4-YL)-HYDRAZINE 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: 80.0%

4-chloro-7-methyl-5,6,7,8-tetrahydrobenzothieno<2,3-b>pyrimidine (137438-23-4) → 4-hydrazino-7-methyl-5,6,7,8-tetrahydrobenzothieno<2,3-d>pyrimidine (137438-24-5)

Guidance literature:

With hydrazine hydrate; In methanol; for 4h; Heating;

Reference yield:

2-amino-6-methyl-4,5,6,7-tetrahydrobenzothiophene-3-carboxamide (95211-68-0) → 4-hydrazino-7-methyl-5,6,7,8-tetrahydrobenzothieno<2,3-d>pyrimidine (137438-24-5)

Guidance literature:

Multi-step reaction with 3 steps

1: 80 percent / toluene

2: 75 percent / POCl₃ / 6 h / Heating

3: 80 percent / H₂N-NH₂*H₂O / methanol / 4 h / Heating

With hydrazine hydrate; trichlorophosphate; In methanol; toluene;

Reference yield:

7-methyl-5,6,7,8-tetrahydrobenzothieno<2,3-d>pyrimidine-4-one (95211-71-5) → 4-hydrazino-7-methyl-5,6,7,8-tetrahydrobenzothieno<2,3-d>pyrimidine (137438-24-5)

Guidance literature:

Multi-step reaction with 2 steps

1: 75 percent / POCl₃ / 6 h / Heating

2: 80 percent / H₂N-NH₂*H₂O / methanol / 4 h / Heating

With hydrazine hydrate; trichlorophosphate; In methanol;

upstream raw materials:

4-chloro-7-methyl-5,6,7,8-tetrahydrobenzothieno<2,3-b>pyrimidine

2-amino-6-methyl-4,5,6,7-tetrahydrobenzothiophene-3-carboxamide

7-methyl-5,6,7,8-tetrahydrobenzothieno<2,3-d>pyrimidine-4-one

Downstream raw materials:

5-Amino-3-methylsulfanyl-1-(7-methyl-5,6,7,8-tetrahydro-benzo[4,5]thieno[2,3-d]pyrimidin-4-yl)-1H-pyrazole-4-carboxylic acid ethyl ester

N-[1-(4-Isobutyl-phenyl)-eth-(E)-ylidene]-N'-(7-methyl-5,6,7,8-tetrahydro-benzo[4,5]thieno[2,3-d]pyrimidin-4-yl)-hydrazine

N-[1-(4-Chloro-phenyl)-meth-(E)-ylidene]-N'-(7-methyl-5,6,7,8-tetrahydro-benzo[4,5]thieno[2,3-d]pyrimidin-4-yl)-hydrazine

N-(7-Methyl-5,6,7,8-tetrahydro-benzo[4,5]thieno[2,3-d]pyrimidin-4-yl)-N'-[1-(3,4,5-trimethoxy-phenyl)-meth-(E)-ylidene]-hydrazine

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