N-Benzylidine-4-bromoaniline → N-(4-Bromophenyl)-N-(1-phenylethyl)amine

HRID 897612Notes

Reaction equation

[Br:1][C:2]1[CH:7]=[CH:6][C:5]([N:8]=[CH:9][C:10]2[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=2)=[CH:4][CH:3]=1.[CH3:16][Li]>C1(C)C=CC=CC=1.C(OCC)C>[Br:1][C:2]1[CH:3]=[CH:4][C:5]([NH:8][CH:9]([C:10]2[CH:11]=[CH:12][CH:13]=[CH:14][CH:15]=2)[CH3:16])=[CH:6][CH:7]=1

Participants

Conditions

Temperature: -40 °C

Procedure

To a solution of N-(4-bromophenyl)-N-(1-phenylmethylidene)amine (1.0 g, 0.00385 mol) in toluene (30 mL) cooled to −78° C., a 1.4M solution of methyl lithium in diethyl ether (5.5 mL) was added dropwise keeping the temperature below −75° C. The solution was warmed up to −40° C. and stirred at this temperature under an atmosphere of nitrogen for 3 hours. The reaction mixture was quenched by a dropwise addition of water and the layers were separated. The organic phase was washed with brine (50 mL), dried with magnesium sulfate and concentrated under reduced pressure to yield N-(4-bromophenyl)-N-(1-phenylethyl)amine (1.03 g, 0.00373 mol) as an off-white solid.

Workup

customthe temperature below −75° C
customThe reaction mixture was quenched by a dropwise addition of water
customthe layers were separated
washThe organic phase was washed with brine (50 mL)
dry with materialdried with magnesium sulfate
concentrationconcentrated under reduced pressure

Sources & evidence

ORD record: ord-06415bd2e08940409b2ff47ba7917b7b
Source dataset: uspto-grants-2005_07
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US06921763B2

Reaction notes

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