dimethyl 1-phenyl-2a,5-diazabenzazulene-3,4-dicarboxylate

Base Information

• Chemical Name: dimethyl 1-phenyl-2a,5-diazabenzazulene-3,4-dicarboxylate
• CAS No.: 111331-34-1
• Molecular Formula: C₂₁H₁₆N₂O₄
• Molecular Weight: 360.369

Synonyms:

Chemical Property of dimethyl 1-phenyl-2a,5-diazabenzazulene-3,4-dicarboxylate

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Technology Process of dimethyl 1-phenyl-2a,5-diazabenzazulene-3,4-dicarboxylate

There total 5 articles about dimethyl 1-phenyl-2a,5-diazabenzazulene-3,4-dicarboxylate 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: 14.0%

8-acetylamino-3-phenyl-1-azaazulene (63725-09-7) + dimethyl acetylenedicarboxylate (762-42-5) → dimethyl 1-phenyl-2a,5-diazabenzazulene-3,4-dicarboxylate (111331-34-1) + dimethyl 3-phenyl-8,9b-diazaindeno<1,6,7-bcd>azulene-1,2-dicarboxylate (143809-95-4) + trimethyl 3-phenyl-8,9b-diazaindeno<1,6,7-bcd>azulene-1,2,9-tricarboxylate (143809-94-3) + tetramethyl 6-acetyl-1-phenyl-4a,5-dihydro-6H-2a,6-diazapentaleno<1,6,7-cd>azulene-3,4,4a,5-tetracarboxylate (143809-90-9)

Guidance literature:

In acetonitrile; for 5h; Heating;

DOI:10.1246/bcsj.65.1784

Reference yield: 10.0%

8-amino-3-phenyl-1-azaazulene (63725-08-6) + acetylenedicarboxylic acid diethyl ester (762-21-0) → dimethyl 1-phenyl-2a,5-diazabenzazulene-3,4-dicarboxylate (111331-34-1)

Guidance literature:

In benzene; for 2h; Heating;

DOI:10.1246/bcsj.63.2121

Reference yield: 5.0%

1-phenyl-2a,4,5-triazabenzazulene (111303-32-3) + dimethyl acetylenedicarboxylate (762-42-5) → dimethyl 1-phenyl-2a,5-diazabenzazulene-3,4-dicarboxylate (111331-34-1) + dimethyl (1-cyano-3-phenyl-1,8-dihydro-1-azaazulen-8-ylideneamino)maleate (111303-35-6)

Guidance literature:

In acetonitrile; for 2h; Heating;

DOI:10.3987/R-1987-03-0767

upstream raw materials:

8-amino-3-phenyl-1-azaazulene

acetylenedicarboxylic acid diethyl ester

8-acetylamino-3-phenyl-1-azaazulene

dimethyl acetylenedicarboxylate

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