3-(4-Bromo-phenyl)-5-hydroxy-5-methyl-5,6-dihydro-pyrrolo[1,2-b]pyrazol-4-one

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Chemical Name:3-(4-Bromo-phenyl)-5-hydroxy-5-methyl-5,6-dihydro-pyrrolo[1,2-b]pyrazol-4-one
CAS No.:123791-75-3
Molecular Formula:C₁₃H₁₁BrN₂O₂
Molecular Weight:307.147
Hs Code.:

Synonyms:3-(4-Bromo-phenyl)-5-hydroxy-5-methyl-5,6-dihydro-pyrrolo[1,2-b]pyrazol-4-one

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Chemical Property of 3-(4-Bromo-phenyl)-5-hydroxy-5-methyl-5,6-dihydro-pyrrolo[1,2-b]pyrazol-4-one

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Technology Process of 3-(4-Bromo-phenyl)-5-hydroxy-5-methyl-5,6-dihydro-pyrrolo[1,2-b]pyrazol-4-one

There total 3 articles about 3-(4-Bromo-phenyl)-5-hydroxy-5-methyl-5,6-dihydro-pyrrolo[1,2-b]pyrazol-4-one 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: 95.0%

: 3-Bromo-1-[4-(4-bromo-phenyl)-3H-pyrazol-3-yl]-2-hydroxy-2-methyl-propan-1-one

: 123791-75-3
3-(4-Bromo-phenyl)-5-hydroxy-5-methyl-5,6-dihydro-pyrrolo[1,2-b]pyrazol-4-one

Guidance literature:: With triethylamine; In acetone; at 20 ℃; for 12h;
DOI:10.1007/BF00470697

Reference yield:

: [4-(4-Bromo-phenyl)-2H-pyrazol-3-yl]-(2-methyl-oxiranyl)-methanone

: 123791-75-3
3-(4-Bromo-phenyl)-5-hydroxy-5-methyl-5,6-dihydro-pyrrolo[1,2-b]pyrazol-4-one

Guidance literature:: Multi-step reaction with 2 steps

1: 78 percent / 47percent HBr / acetic acid / 0.5 h / 25 °C

2: 95 percent / triethylamine / acetone / 12 h / 20 °C

With hydrogen bromide; triethylamine; In acetic acid; acetone;
DOI:10.1007/BF00470697

Reference yield:

: 113675-22-2
[4-(4-Bromo-phenyl)-4,5-dihydro-1H-pyrazol-3-yl]-(2-methyl-oxiranyl)-methanone

: 123791-75-3
3-(4-Bromo-phenyl)-5-hydroxy-5-methyl-5,6-dihydro-pyrrolo[1,2-b]pyrazol-4-one

Guidance literature:: With N-Bromosuccinimide; triethylamine; Yield given. Multistep reaction; 1) chloroform, T < 50 deg C, 0.5-1h, 2) acetone, 20 deg C, 12 h;
DOI:10.1007/BF00470697