5-Methyl-6-oxo-4,4-diphenyl-1,6-dihydro-4λ⁵-[1,4]azaphosphinine-2,3-dicarboxylic acid dimethyl ester

Base Information

• Chemical Name: 5-Methyl-6-oxo-4,4-diphenyl-1,6-dihydro-4λ⁵-[1,4]azaphosphinine-2,3-dicarboxylic acid dimethyl ester
• CAS No.: 127802-75-9
• Molecular Formula: C₂₁H₂₀NO₅P
• Molecular Weight: 397.367

Synonyms:5-Methyl-6-oxo-4,4-diphenyl-1,6-dihydro-4λ⁵-[1,4]azaphosphinine-2,3-dicarboxylic acid dimethyl ester

Chemical Property of 5-Methyl-6-oxo-4,4-diphenyl-1,6-dihydro-4λ⁵-[1,4]azaphosphinine-2,3-dicarboxylic acid dimethyl ester

Chemical Property:

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Technology Process of 5-Methyl-6-oxo-4,4-diphenyl-1,6-dihydro-4λ⁵-[1,4]azaphosphinine-2,3-dicarboxylic acid dimethyl ester

There total 3 articles about 5-Methyl-6-oxo-4,4-diphenyl-1,6-dihydro-4λ⁵-[1,4]azaphosphinine-2,3-dicarboxylic acid dimethyl ester 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: 88.0%

2-[(Z)-Ethoxycarbonylimino]-3-(ethyl-diphenyl-λ5-phosphanylidene)-succinic acid dimethyl ester (127802-66-8) → 5-Methyl-6-oxo-4,4-diphenyl-1,6-dihydro-4λ5-[1,4]azaphosphinine-2,3-dicarboxylic acid dimethyl ester (127802-75-9)

Guidance literature:

With potassium hydride; In tetrahydrofuran; at 70 ℃; for 6h;

DOI:10.1016/0022-328X(90)85215-K

Reference yield:

N-ethoxycarbonyl-P-ethyldiphenyl-λ5-phosphazene (124730-75-2) → 5-Methyl-6-oxo-4,4-diphenyl-1,6-dihydro-4λ5-[1,4]azaphosphinine-2,3-dicarboxylic acid dimethyl ester (127802-75-9)

Guidance literature:

Multi-step reaction with 2 steps

1: 89 percent / CH₂Cl₂ / 6 h / Ambient temperature

2: 88 percent / KH / tetrahydrofuran / 6 h / 70 °C

With potassium hydride; In tetrahydrofuran; dichloromethane;

DOI:10.1016/0022-328X(90)85215-K

Reference yield:

dimethyl acetylenedicarboxylate (762-42-5) → 5-Methyl-6-oxo-4,4-diphenyl-1,6-dihydro-4λ5-[1,4]azaphosphinine-2,3-dicarboxylic acid dimethyl ester (127802-75-9)

Guidance literature:

Multi-step reaction with 2 steps

1: 89 percent / CH₂Cl₂ / 6 h / Ambient temperature

2: 88 percent / KH / tetrahydrofuran / 6 h / 70 °C

With potassium hydride; In tetrahydrofuran; dichloromethane;

DOI:10.1016/0022-328X(90)85215-K

upstream raw materials:

2-[(Z)-Ethoxycarbonylimino]-3-(ethyl-diphenyl-λ⁵-phosphanylidene)-succinic acid dimethyl ester

N-ethoxycarbonyl-P-ethyldiphenyl-λ⁵-phosphazene

dimethyl acetylenedicarboxylate

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