反应详情

温度

80 °C

Part B: In a mixture of 270 ml dimethoxyethane and 45 ml water, after bubbling through nitrogen gas for 30 minutes, a quantity of 5.0 g ( 19.5 mmol) of 2-methyl-4-chloro-8-bromo-quinoline, 3.5 g (21 mmol) of 2,4,6-trimethyl phenylboronic acid, 13.2 g (42 mmol) Ba(OH)2.8H2O and 0.69 g (0.6 mmol) tetrakis(triphenylphosphine)palladium were subsequently dissolved. After heating to 80° C. for 16 hours and subsequent cooling, 250 ml of water and 500 ml of CH2Cl2 were added. After separation the organic layer was dried over sodium sulphate and concentrated in vacuo. The product was purified on a silicagel column using dichloromethane as eluent. A total of 5.1 g of 2-methyl-4-chloro-8-(2,4,6-trimethylphenyl)-quinoline was obtained (88% yield).

1. customafter bubbling through nitrogen gas for 30 minutes
2. customAfter separation the organic layer
3. dry with materialwas dried over sodium sulphate
4. concentrationconcentrated in vacuo
5. customThe product was purified on a silicagel column