Methyl Glycolate → Methyl 2-bromocyclooctene-3-glycolate

참여 물질

반응 단계

3.85 g of silver perchlorate (18.6 mmol) are added to a solution of 8,8-dibromobicyclo[5.1.0]octane 16 (2.5 g, 9.3 mmol) and methyl glycolate (6.35 ml, 83.9 mmol) dissolved in 5 ml of anhydrous toluene in a dry round-bottomed flask under Ar protected from light by an aluminum film. The reaction mixture is stirred at ambient temperature for 1 h 30 and then the silver salts are filtered off through a sintered glass funnel and washed with AcOEt. The solution is concentrated under vacuum to give a viscous brown oil which is purified by chromatography on silica gel (cyclohexane/2-15% AcOEt) to produce 17 in the form of a yellow oil (w=1.7 g, i.e. 66% yield).

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