Ethanol → 4-Bromo-2-(4,4-dimethyl-cyclohex-1-enyl)-phenylamine

HRID 1992025Notes

Reaction equation

[Br:1][C:2]1[CH:7]=[CH:6][C:5]([NH2:8])=[C:4](I)[CH:3]=1.[CH3:10][C:11]1([CH3:20])[CH2:16][CH2:15][C:14](B(O)O)=[CH:13][CH2:12]1.C([O-])([O-])=O.[Na+].[Na+].CCO>CCOC(C)=O.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.C1(C)C=CC=CC=1>[Br:1][C:2]1[CH:7]=[CH:6][C:5]([NH2:8])=[C:4]([C:14]2[CH2:15][CH2:16][C:11]([CH3:20])([CH3:10])[CH2:12][CH:13]=2)[CH:3]=1

Participants

Conditions

Temperature: 80 °C

Procedure

A flask is charged with 4-bromo-2-iodo-phenylamine (1.10 g, 3.70 mmol), 4,4-dimethylcyclohexen-1-ylboronic acid (0.630 g, 4.07 mmol), Pd(PPh3)4 (0.240 g, 5 mol %), 2 M Na2CO3 (16 mL), EtOH (16 mL) and toluene (32 mL) and heated at 80° C. for 6 h. The reaction was diluted with EtOAc (100 mL) and washed with saturated aqueous NaHCO3 (2×100 mL) and brine (100 mL), and the organic layer dried over Na2SO4 and evaporated. The crude product was purified by flash silica gel chromatography eluting with 10% EtOAc/hexane to give 0.68 g (66%) of the title compound as a light yellow oil: Mass spectrum (ESI, m/z) calcd. for C14H18BrN, 280.1 (M+H), found 280.1.

Workup

washwashed with saturated aqueous NaHCO3 (2×100 mL) and brine (100 mL)
dry with materialthe organic layer dried over Na2SO4
customevaporated
customThe crude product was purified by flash silica gel chromatography
washeluting with 10% EtOAc/hexane

Sources & evidence

ORD record: ord-ccc1afb696df4df4ba22865c318ca285
Source dataset: uspto-grants-2010_01
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07645755B2

Reaction notes

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