2-[(1E,3E)-4-(3-methoxy-4-methoxymethoxyphenyl)-1,3-butadienyl]-6-oxo-6H-pyrano[2,3-e]benzoxazole-8-carboxamide

Base Information

Chemical Name:2-[(1E,3E)-4-(3-methoxy-4-methoxymethoxyphenyl)-1,3-butadienyl]-6-oxo-6H-pyrano[2,3-e]benzoxazole-8-carboxamide
CAS No.:173033-36-8
Molecular Formula:C₂₄H₂₀N₂O₇
Molecular Weight:448.432
Hs Code.:

Synonyms:2-[(1E,3E)-4-(3-methoxy-4-methoxymethoxyphenyl)-1,3-butadienyl]-6-oxo-6H-pyrano[2,3-e]benzoxazole-8-carboxamide

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Chemical Property of 2-[(1E,3E)-4-(3-methoxy-4-methoxymethoxyphenyl)-1,3-butadienyl]-6-oxo-6H-pyrano[2,3-e]benzoxazole-8-carboxamide

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Technology Process of 2-[(1E,3E)-4-(3-methoxy-4-methoxymethoxyphenyl)-1,3-butadienyl]-6-oxo-6H-pyrano[2,3-e]benzoxazole-8-carboxamide

There total 5 articles about 2-[(1E,3E)-4-(3-methoxy-4-methoxymethoxyphenyl)-1,3-butadienyl]-6-oxo-6H-pyrano[2,3-e]benzoxazole-8-carboxamide 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: 72.0%

: 173033-18-6
ethyl 2-[(1E,3E)-4-(3-methoxy-4-methoxymethoxyphenyl)-1,3-butadienyl]-6-oxo-6H-pyrano[2,3-e]benzoxazole-8-carboxylate

: 173033-36-8
2-[(1E,3E)-4-(3-methoxy-4-methoxymethoxyphenyl)-1,3-butadienyl]-6-oxo-6H-pyrano[2,3-e]benzoxazole-8-carboxamide

Guidance literature:: With ammonium hydroxide; In methanol; dichloromethane; at 20 ℃; for 96h;

Reference yield:

: 30192-51-9
ethyl 8-amino-7-hydroxy-4-oxo-4H-1-benzopyran-2-carboxylate

: 173033-36-8
2-[(1E,3E)-4-(3-methoxy-4-methoxymethoxyphenyl)-1,3-butadienyl]-6-oxo-6H-pyrano[2,3-e]benzoxazole-8-carboxamide

Guidance literature:: Multi-step reaction with 5 steps

1: 92 percent / NaHCO₃ / acetone / 2 h / 20 °C

2: 84 percent / ethyl polyphosphate / 1,2-dichloro-ethane / 4 h / Heating

3: 93 percent / 4 h / 140 °C

4: 83 percent / NaH; molecular sieves (4 Angstroem) / tetrahydrofuran / 17 h / 20 °C

5: 72 percent / 25 percent aq.NH₄OH / CH₂Cl₂; methanol / 96 h / 20 °C

With ammonium hydroxide; ethyl phosphate; 4 A molecular sieve; sodium hydride; sodium hydrogencarbonate; In tetrahydrofuran; methanol; dichloromethane; 1,2-dichloro-ethane; acetone; 1: chloroacetylation / 2: Cyclization / 3: Substitution / 4: Condensation / 5: ammonolysis;

Reference yield:

: 32278-24-3
ethyl 8-N-(chloroacetyl)amino-7-hydroxy-4-oxo-4H-1-benzopyran-2-carboxylate

: 173033-36-8
2-[(1E,3E)-4-(3-methoxy-4-methoxymethoxyphenyl)-1,3-butadienyl]-6-oxo-6H-pyrano[2,3-e]benzoxazole-8-carboxamide

Guidance literature:: Multi-step reaction with 4 steps

1: 84 percent / ethyl polyphosphate / 1,2-dichloro-ethane / 4 h / Heating

2: 93 percent / 4 h / 140 °C

3: 83 percent / NaH; molecular sieves (4 Angstroem) / tetrahydrofuran / 17 h / 20 °C

4: 72 percent / 25 percent aq.NH₄OH / CH₂Cl₂; methanol / 96 h / 20 °C

With ammonium hydroxide; ethyl phosphate; 4 A molecular sieve; sodium hydride; In tetrahydrofuran; methanol; dichloromethane; 1,2-dichloro-ethane; 1: Cyclization / 2: Substitution / 3: Condensation / 4: ammonolysis;