1H-Pyrrolo[1,2-a]benzimidazol-3-ol,2,3-dihydro-7-methyl-(9CI)

Base Information

• Chemical Name: 1H-Pyrrolo[1,2-a]benzimidazol-3-ol,2,3-dihydro-7-methyl-(9CI)
• CAS No.: 123567-31-7
• Molecular Formula: C₁₁H₁₂N₂O
• Molecular Weight: 188.229
• Mol file: 123567-31-7.mol

Synonyms:1H-Pyrrolo[1,2-a]benzimidazol-3-ol,2,3-dihydro-7-methyl-(9CI)

Chemical Property of 1H-Pyrrolo[1,2-a]benzimidazol-3-ol,2,3-dihydro-7-methyl-(9CI)

Chemical Property:

• PSA: 38.05000
• LogP: 1.78180

Purity/Quality:

2,3-dihydro-7-methyl-1H-Pyrrolo[1,2-a]benzimidazol-3-ol 97.00% ^*data from reagent suppliers

Safty Information:

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Technology Process of 1H-Pyrrolo[1,2-a]benzimidazol-3-ol,2,3-dihydro-7-methyl-(9CI)

There total 2 articles about 1H-Pyrrolo[1,2-a]benzimidazol-3-ol,2,3-dihydro-7-methyl-(9CI) 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:

3-(N-pyrrolidino)-4-nitrotoluene (123567-04-4) → 7-Methyl-2,3-dihydro-1H-benzo[d]pyrrolo[1,2-a]imidazol-3-ol (123567-31-7)

Guidance literature:

With hydrogenchloride; acetic anhydride; zinc(II) chloride; Yield given. Multistep reaction; 1) 100 - 110 deg C, 5h, 2) 80 deg C, 5 min;

DOI:10.1021/jo00297a040

Reference yield:

3-bromo-4-nitrotoluene (40385-54-4) → 7-Methyl-2,3-dihydro-1H-benzo[d]pyrrolo[1,2-a]imidazol-3-ol (123567-31-7)

Guidance literature:

Multi-step reaction with 2 steps

1: 94 percent / 3 h / Heating

2: 1) ZnCl₂, acetic anhydride, 2) conc. HCl / 1) 100 - 110 deg C, 5h, 2) 80 deg C, 5 min

With hydrogenchloride; acetic anhydride; zinc(II) chloride;

DOI:10.1021/jo00297a040

Reference yield:

7-Methyl-2,3-dihydro-1H-benzo[d]pyrrolo[1,2-a]imidazol-3-ol (123567-31-7) → Carbonic acid 6-bromo-7-methyl-5-nitro-2,3-dihydro-1H-benzo[d]pyrrolo[1,2-a]imidazol-3-yl ester phenyl ester (123567-21-5)

Guidance literature:

Multi-step reaction with 5 steps

1: 85 percent / (dimethylamino)pyridine, NEt₃ / CH₂Cl₂ / 0.5 h / Ambient temperature

2: 75 percent / 0.72M Br₂, HOAc / 4 h / 100 - 110 °C

3: 71 percent / HNO₃, conc. H₂SO₄ / 0.17 h / ice bath

4: 81 percent / NaOMe / methanol / 0.5 h / Ambient temperature

5: 81 percent / pyridine / 1) 0 deg C, 15 min, 2) RT, 1h

With pyridine; dmap; sulfuric acid; bromine; nitric acid; sodium methylate; acetic acid; triethylamine; In methanol; dichloromethane;

DOI:10.1021/jo00297a040

upstream raw materials:

3-(N-pyrrolidino)-4-nitrotoluene

3-bromo-4-nitrotoluene

Downstream raw materials:

Carbonic acid 6-bromo-7-methyl-5-nitro-2,3-dihydro-1H-benzo[d]pyrrolo[1,2-a]imidazol-3-yl ester phenyl ester

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