2-(phenylmethylenehydrazone)-5,6-dimethyl-3H,4H-thieno[2,3-d]pyrimidin-4-one

Base Information

• Chemical Name: 2-(phenylmethylenehydrazone)-5,6-dimethyl-3H,4H-thieno[2,3-d]pyrimidin-4-one
• CAS No.: 320338-51-0
• Molecular Formula: C₁₅H₁₄N₄OS
• Molecular Weight: 298.368

Synonyms:2-(phenylmethylenehydrazone)-5,6-dimethyl-3H,4H-thieno[2,3-d]pyrimidin-4-one

Chemical Property of 2-(phenylmethylenehydrazone)-5,6-dimethyl-3H,4H-thieno[2,3-d]pyrimidin-4-one

Chemical Property:

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Technology Process of 2-(phenylmethylenehydrazone)-5,6-dimethyl-3H,4H-thieno[2,3-d]pyrimidin-4-one

There total 2 articles about 2-(phenylmethylenehydrazone)-5,6-dimethyl-3H,4H-thieno[2,3-d]pyrimidin-4-one 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: 70.0%

benzaldehyde (100-52-7) + 2-hydrazino-5,6-dimethylthieno<2,3-d>pyrimidin-4(3H)-one (53074-14-9) → 2-(phenylmethylenehydrazone)-5,6-dimethyl-3H,4H-thieno[2,3-d]pyrimidin-4-one (320338-51-0)

Guidance literature:

With sodium acetate; In acetic acid; for 5h; Heating;

DOI:10.1080/10426500008046607

Reference yield:

5,6-dimethyl-2-methylthio-3,4-dihydrothieno[2,3-d]pyrimidin-4-one (53074-16-1) → 2-(phenylmethylenehydrazone)-5,6-dimethyl-3H,4H-thieno[2,3-d]pyrimidin-4-one (320338-51-0)

Guidance literature:

Multi-step reaction with 2 steps

1: 85 percent / hydrazine hydrate / dioxane

2: 70 percent / NaOAc / acetic acid / 5 h / Heating

With sodium acetate; hydrazine hydrate; In 1,4-dioxane; acetic acid;

DOI:10.1080/10426500008046607

Reference yield: 62.0%

2-(phenylmethylenehydrazone)-5,6-dimethyl-3H,4H-thieno[2,3-d]pyrimidin-4-one (320338-51-0) → 3-phenyl-6,7-dimethyl-1H,5H-thieno[2,3-d][1,2,4]triazolo[4,3-a]pyrimidin-5-one

Guidance literature:

With bromine; sodium acetate; acetic acid; Heating;

DOI:10.1080/10426500008046607

upstream raw materials:

benzaldehyde

2-hydrazino-5,6-dimethylthieno<2,3-d>pyrimidin-4(3H)-one

5,6-dimethyl-2-methylthio-3,4-dihydrothieno[2,3-d]pyrimidin-4-one

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