4-(3-chloro-5-cyclopentyl-4,5-dihydro-1H-pyrazol-1-yl)-2-methylbenzonitrile

Base Information

Chemical Name:4-(3-chloro-5-cyclopentyl-4,5-dihydro-1H-pyrazol-1-yl)-2-methylbenzonitrile
CAS No.:1246765-04-7
Molecular Formula:C₁₆H₁₈ClN₃
Molecular Weight:287.792
Hs Code.:

Synonyms:4-(3-chloro-5-cyclopentyl-4,5-dihydro-1H-pyrazol-1-yl)-2-methylbenzonitrile

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Chemical Property of 4-(3-chloro-5-cyclopentyl-4,5-dihydro-1H-pyrazol-1-yl)-2-methylbenzonitrile

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Technology Process of 4-(3-chloro-5-cyclopentyl-4,5-dihydro-1H-pyrazol-1-yl)-2-methylbenzonitrile

There total 3 articles about 4-(3-chloro-5-cyclopentyl-4,5-dihydro-1H-pyrazol-1-yl)-2-methylbenzonitrile 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: 89.0%

: 1246765-08-1
4-(5-cyclopentyl-3-oxopyrazolidin-1-yl)-2-methylbenzonitrile

: 1246765-04-7
4-(3-chloro-5-cyclopentyl-4,5-dihydro-1H-pyrazol-1-yl)-2-methylbenzonitrile

Guidance literature:: 4-(5-cyclopentyl-3-oxopyrazolidin-1-yl)-2-methylbenzonitrile; With trichlorophosphate; In acetonitrile; at 20 - 80 ℃;

With sodium hydrogencarbonate; In dichloromethane;

Reference yield:

: 2931-23-9
ethyl 3-cyclopentyl acrylate

: 1246765-04-7
4-(3-chloro-5-cyclopentyl-4,5-dihydro-1H-pyrazol-1-yl)-2-methylbenzonitrile

Guidance literature:: Multi-step reaction with 2 steps

1.1: potassium tert-butylate / tetrahydrofuran / 3 h / Reflux

1.2: 2 h / pH 2

2.1: trichlorophosphate / acetonitrile / 20 - 80 °C

With potassium tert-butylate; trichlorophosphate; In tetrahydrofuran; acetonitrile;
DOI:10.1016/j.tetlet.2011.10.052

Reference yield:

: 872-53-7
cyclopentanealdehyde

: 1246765-04-7
4-(3-chloro-5-cyclopentyl-4,5-dihydro-1H-pyrazol-1-yl)-2-methylbenzonitrile

Guidance literature:: Multi-step reaction with 3 steps

1.1: 2-methyltetrahydrofuran; sodium ethanolate / ethanol / 1.5 h / 0 °C

1.2: 17 h / 0 - 20 °C

2.1: potassium tert-butylate / tetrahydrofuran / 3 h / Reflux

2.2: 2 h / pH 2

3.1: trichlorophosphate / acetonitrile / 20 - 80 °C

With 2-methyltetrahydrofuran; potassium tert-butylate; sodium ethanolate; trichlorophosphate; In tetrahydrofuran; ethanol; acetonitrile; 1.2: Horner-Emmons olefination;
DOI:10.1016/j.tetlet.2011.10.052