o-Xylyl bromide → HCID 53729059, compound

Participants

Reaction Steps

4 g (35.7 mmol) of potassium tert-butylate are added to a solution of 730 mg (2.7 mmol) of 18-crown-6 in 50 ml of ether, after which a solution of 5 g (27.5 mmol) of the pyrrole from Example 18 in 50 ml of ether are added dropwise and stirring is carried out for 30 minutes at room temperature. Thereafter, a solution of 6.6 g (37.5 mmol) of o-methylbenzyl bromide in 25 ml of ether is added and stirring is carried out overnight at room temperature. The mixture is poured onto water and extracted with ether, and the organic phase is dried and evaporated down. Chromatography over silica gel using hexane/ethyl acetate gives 4.1 g (52%) of the product as

Provenance & Evidence