5-Methyl-2-thioxo-1,3-di-p-tolyl-2,3-dihydro-1H-pyrano[2,3-d]pyrimidine-4,7-dione

Base Information

Chemical Name:5-Methyl-2-thioxo-1,3-di-p-tolyl-2,3-dihydro-1H-pyrano[2,3-d]pyrimidine-4,7-dione
CAS No.:129659-44-5
Molecular Formula:C₂₂H₁₈N₂O₃S
Molecular Weight:390.463
Hs Code.:

Synonyms:5-Methyl-2-thioxo-1,3-di-p-tolyl-2,3-dihydro-1H-pyrano[2,3-d]pyrimidine-4,7-dione

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Chemical Property of 5-Methyl-2-thioxo-1,3-di-p-tolyl-2,3-dihydro-1H-pyrano[2,3-d]pyrimidine-4,7-dione

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Technology Process of 5-Methyl-2-thioxo-1,3-di-p-tolyl-2,3-dihydro-1H-pyrano[2,3-d]pyrimidine-4,7-dione

There total 4 articles about 5-Methyl-2-thioxo-1,3-di-p-tolyl-2,3-dihydro-1H-pyrano[2,3-d]pyrimidine-4,7-dione 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: 89.0%

: 55138-39-1
1,3-di(4-methylphenyl)-2-thiobarbituric acid

: 141-97-9
ethyl acetoacetate

: 129659-44-5
5-Methyl-2-thioxo-1,3-di-p-tolyl-2,3-dihydro-1H-pyrano[2,3-d]pyrimidine-4,7-dione

Guidance literature:: With sulfuric acid; Heating;
DOI:10.1016/S0040-4020(01)90530-7

Reference yield: 88.0%

: 180027-74-1
7-imino-5-methyl-4-oxo-2-thioxo-1,3-di-p-tolyl-1,3,4,7-tetrahydro-2H-pyrano[2,3-d]pyrimidine-6-carbonitrile

: 129659-44-5
5-Methyl-2-thioxo-1,3-di-p-tolyl-2,3-dihydro-1H-pyrano[2,3-d]pyrimidine-4,7-dione

Guidance literature:: With hydrogen bromide; In acetic acid; for 3h; Heating;

Reference yield:

: 55138-39-1
1,3-di(4-methylphenyl)-2-thiobarbituric acid

: 129659-44-5
5-Methyl-2-thioxo-1,3-di-p-tolyl-2,3-dihydro-1H-pyrano[2,3-d]pyrimidine-4,7-dione

Guidance literature:: Multi-step reaction with 3 steps

1: pyridine

2: 80 percent / ammonium acetate / ethanol / 2 h / Heating

3: 88 percent / HBr / acetic acid / 3 h / Heating

With pyridine; ammonium acetate; hydrogen bromide; In ethanol; acetic acid; 1: Acetylation / 2: Condensation / 3: Hydrolysis;