ChemicalBook CAS DataBase List 5-(4-bromophenyl)pentanoic acid

5-(4-bromophenyl)pentanoic acid synthesis

13synthesis methods

Product Name:5-(4-bromophenyl)pentanoic acid
CAS Number:22647-95-6
Molecular formula:C11H13BrO2
Molecular Weight:257.12

4-Pentenoic acid, 5-(4-bromophenyl)-, (4E)-

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22647-95-6
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Yield:22647-95-6 92%

Reaction Conditions:

Stage #1: (E)-5-(4-bromophenyl)pent-4-enoic acid in isopropyl alcohol;Inert atmosphere;
Stage #2: with hydrogen under 760.051 Torr; for 3 h;

Steps:

22.22B 5-(4-Bromophenyl)pentanoic acid

To a solution of (E)-5-(4-bromophenyl)pent-4-enoic acid (5.6 g, 22.0 mmol) in isopropanol (40 mL) was added platinum on sulfide, 5 wt.% on carbon (2 g, 22.0mmol) under N2. The mixture was stirred under H2 (1 atm) for 3 h, then was filtered; the filtrate was concentrated in vacuo to afford the title compound (5.2 g, 20.2 mmol, 92% yield). ‘HNMR(500 MHz, CDC13) ? 7.44-7.38 (m, 2H), 7.12-7.02 (m, 2H), 2.65 - 2.57 (m, 2H), 2.45 - 2.34 (m, 2H), 1.75 - 1.63 (m, 4H).

References:

WO2016/40225,2016,A1 Location in patent:Paragraph 00250

35333-26-7 Synthesis