2-(4-Methylphenyl)-4H-pyrazino[2,3-d][1,3]oxazin-4-one

Base Information

• Chemical Name: 2-(4-Methylphenyl)-4H-pyrazino[2,3-d][1,3]oxazin-4-one
• CAS No.: 155513-81-8
• Molecular Formula: C13H9N3O2
• Molecular Weight: 239.22946
• DSSTox Substance ID: DTXSID10436679
• Nikkaji Number: J584.006F
• Wikidata: Q82251961
• Mol file: 155513-81-8.mol

Synonyms:155513-81-8;2-(4-Methylphenyl)-4H-pyrazino[2,3-d][1,3]oxazin-4-one;2-(4-Methylphenyl)pyrazino[2,3-d][1,3]oxazin-4-one;DTXSID10436679;FT-0746736

Chemical Property of 2-(4-Methylphenyl)-4H-pyrazino[2,3-d][1,3]oxazin-4-one

Chemical Property:

• Boiling Point: 390.3±30.0 °C(Predicted)
• PKA: -2.27±0.20(Predicted)
• PSA: 68.88000
• Density: 1.37±0.1 g/cm3(Predicted)
• LogP: 1.95340
• XLogP3: 1.8
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 5
• Rotatable Bond Count: 1
• Exact Mass: 239.069476538
• Heavy Atom Count: 18
• Complexity: 361

Purity/Quality:

97% ^*data from raw suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

• Canonical SMILES: CC1=CC=C(C=C1)C2=NC3=NC=CN=C3C(=O)O2

Technology Process of 2-(4-Methylphenyl)-4H-pyrazino[2,3-d][1,3]oxazin-4-one

There total 3 articles about 2-(4-Methylphenyl)-4H-pyrazino[2,3-d][1,3]oxazin-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: 71.0%

3-(4-Methyl-benzoylamino)-pyrazine-2-carboxylic acid methyl ester (155513-77-2) → 2-p-Tolyl-pyrazino[2,3-d][1,3]oxazin-4-one (155513-81-8)

Guidance literature:

With dibromotetrachloroethane; triethylamine; triphenylphosphine; In toluene; at 80 ℃; for 4h;

DOI:10.1055/s-1994-25487

Reference yield:

Methyl 3-amino-2-pyrazinecarboxylate (16298-03-6) → 2-p-Tolyl-pyrazino[2,3-d][1,3]oxazin-4-one (155513-81-8)

Guidance literature:

Multi-step reaction with 3 steps

1: 68 percent / pyridine / 6 h / 50 °C

2: 92 percent / 98percent hydrazine hydrate / dioxane; propan-2-ol / 0.5 h / Heating

3: 71 percent / Ph₃P, Et₃N, dibromotetrachloroethane / toluene / 4 h / 80 °C

With pyridine; dibromotetrachloroethane; hydrazine hydrate; triethylamine; triphenylphosphine; In 1,4-dioxane; isopropyl alcohol; toluene;

DOI:10.1055/s-1994-25487

Reference yield:

3-[Bis-(4-methyl-benzoyl)-amino]-pyrazine-2-carboxylic acid methyl ester (155513-73-8) → 2-p-Tolyl-pyrazino[2,3-d][1,3]oxazin-4-one (155513-81-8)

Guidance literature:

Multi-step reaction with 2 steps

1: 92 percent / 98percent hydrazine hydrate / dioxane; propan-2-ol / 0.5 h / Heating

2: 71 percent / Ph₃P, Et₃N, dibromotetrachloroethane / toluene / 4 h / 80 °C

With dibromotetrachloroethane; hydrazine hydrate; triethylamine; triphenylphosphine; In 1,4-dioxane; isopropyl alcohol; toluene;

DOI:10.1055/s-1994-25487

upstream raw materials:

3-(4-Methyl-benzoylamino)-pyrazine-2-carboxylic acid methyl ester

Methyl 3-amino-2-pyrazinecarboxylate

3-[Bis-(4-methyl-benzoyl)-amino]-pyrazine-2-carboxylic acid methyl ester