反应详情

1-Bromo-2-iodobenzene (1 ml) was combined with cyclopentadiene (1.5 ml) and added dropwise to a mixture of magnesium (0.25 g) and tetrahydrofuran (25 ml) which had been heated to reflux. After the addition, heating was continued for 1 hour. The mixture was cooled to room temperature, treated with water (50 ml), and extracted with ether (3×30 ml). The combined organic layers were dried over magnesium sulfate and the solvents removed on a rotary evaporator. The residue was distilled on a Kugelrohr apparatus (40° C. at 0.1 mm Hg) to provide the product as a yellow oil.

1. temperaturehad been heated to reflux
2. additionAfter the addition
3. temperatureheating
4. extractionextracted with ether (3×30 ml)
5. dry with materialThe combined organic layers were dried over magnesium sulfate
6. customthe solvents removed on a rotary evaporator
7. distillationThe residue was distilled on a Kugelrohr apparatus (40° C. at 0.1 mm Hg)