Benzenamine, 3-bromo-4-methyl- → N-(3-bromo-4-methyl-phenyl)4-(4-methyl-piperazin-1-ylmethyl)-benzamide

HRID 273289Notes

Reaction equation

C[Al](C)C.[Br:5][C:6]1[CH:7]=[C:8]([CH:10]=[CH:11][C:12]=1[CH3:13])[NH2:9].C[O:15][C:16](=O)[C:17]1[CH:22]=[CH:21][C:20]([CH2:23][N:24]2[CH2:29][CH2:28][N:27]([CH3:30])[CH2:26][CH2:25]2)=[CH:19][CH:18]=1>C1(C)C=CC=CC=1>[CH3:13][C:12]1[CH:11]=[CH:10][C:8]([NH:9][C:16](=[O:15])[C:17]2[CH:18]=[CH:19][C:20]([CH2:23][N:24]3[CH2:25][CH2:26][N:27]([CH3:30])[CH2:28][CH2:29]3)=[CH:21][CH:22]=2)=[CH:7][C:6]=1[Br:5]

Participants

Conditions

Temperature: 0 °C

Procedure

A solution of trimethylaluminium (2M in toluene, 15.0 ml) is added over a period of 30 min to a solution of 3-bromo-4-methyl-aniline(2.15 g, 11.5 mmol) and 4-(4-methyl-piperazin-1-ylmethyl)-benzoic acid methyl ester (2.87 g, 11.5 mmol) in toluene (20 ml) at 40° C. under an atmosphere of argon. After gas evolution ceases, the reaction mixture is stirred 30 min before being cooled to 0° C. and partitioned between cold aqueous 1N NaOH (100 ml) and toluene (100 ml). The organic layer is extracted with aqueous saturated NH4Cl (100 ml) and aqueous saturated NaCl (100 ml) The organic layer is concentrated in vacuo to give 4.69 g (97 area % by HPLC) of the title compound as pale yellow crystals.

Workup

custompartitioned between cold aqueous 1N NaOH (100 ml) and toluene (100 ml)
extractionThe organic layer is extracted with aqueous saturated NH4Cl (100 ml) and aqueous saturated NaCl (100 ml) The organic layer
concentrationis concentrated in vacuo

Sources & evidence

ORD record: ord-a96d00eed30545c5bcbe3c64f9b42c98
Source dataset: uspto-grants-2008_11
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07456283B2

Reaction notes

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