5-benzylamino-1,3-dimethylbenzo[5,6]pyrano[2,3-d]pyrimidine-2,4(1H,3H)-dione

Base Information

• Chemical Name: 5-benzylamino-1,3-dimethylbenzo[5,6]pyrano[2,3-d]pyrimidine-2,4(1H,3H)-dione
• CAS No.: 855006-51-8
• Molecular Formula: C₂₀H₁₉N₃O₃
• Molecular Weight: 349.389

Synonyms:5-benzylamino-1,3-dimethylbenzo[5,6]pyrano[2,3-d]pyrimidine-2,4(1H,3H)-dione

Chemical Property of 5-benzylamino-1,3-dimethylbenzo[5,6]pyrano[2,3-d]pyrimidine-2,4(1H,3H)-dione

Chemical Property:

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Technology Process of 5-benzylamino-1,3-dimethylbenzo[5,6]pyrano[2,3-d]pyrimidine-2,4(1H,3H)-dione

There total 4 articles about 5-benzylamino-1,3-dimethylbenzo[5,6]pyrano[2,3-d]pyrimidine-2,4(1H,3H)-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: 97.0%

1,3-dimethylbenzo[5,6]pyrano[2,3-d]pyrimidine-2,4(1H,3H)-dionylium tetrafluoroborate + benzylamine (100-46-9) → 5-benzylamino-1,3-dimethylbenzo[5,6]pyrano[2,3-d]pyrimidine-2,4(1H,3H)-dione (855006-51-8)

Guidance literature:

In acetonitrile; at 20 ℃; for 1h;

DOI:10.1016/j.tet.2005.03.052

Reference yield:

1,3-dimethylbenzo[5,6]pyrano[2,3-d]pyrimidine-2,4(1H,3H)-dionylium tetrafluoroborate → 5-benzylamino-1,3-dimethylbenzo[5,6]pyrano[2,3-d]pyrimidine-2,4(1H,3H)-dione (855006-51-8)

Guidance literature:

Multi-step reaction with 3 steps

1: 92 percent / NaHCO₃ / acetonitrile; H₂O / 1 h / 20 °C

2: 100 percent / Ac₂O; aq. HBF₄ / 1 h / 0 °C

3: 97 percent / acetonitrile / 1 h / 20 °C

With tetrafluoroboric acid; acetic anhydride; sodium hydrogencarbonate; In water; acetonitrile;

DOI:10.1016/j.tet.2005.03.052

Reference yield:

1,3-dimethyl-5-hydroxybenzo[5,6]pyrano[2,3-d]pyrimidine-2,4(1H,3H)-dione (855006-52-9) → 5-benzylamino-1,3-dimethylbenzo[5,6]pyrano[2,3-d]pyrimidine-2,4(1H,3H)-dione (855006-51-8)

Guidance literature:

Multi-step reaction with 2 steps

1: 100 percent / Ac₂O; aq. HBF₄ / 1 h / 0 °C

2: 97 percent / acetonitrile / 1 h / 20 °C

With tetrafluoroboric acid; acetic anhydride; In acetonitrile;

DOI:10.1016/j.tet.2005.03.052

upstream raw materials:

benzylamine

1,3-dimethyl-5-hydroxybenzo[5,6]pyrano[2,3-d]pyrimidine-2,4(1H,3H)-dione

5-(2,3,4,5-tetrahydro-1,3-dimethyl-2,4-dioxo-1H-chromeno[2,3-d]pyrimidin-5-yl)-1,3-dimethylpyrimidine-2,4,6(1H,3H,5H)-trione

Downstream raw materials:

1,3-dimethyl-5-[(2'-hydroxyphenyl)methylidene]pyrimidine-2,4,6(1H,3H,5H)-trione

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