Furan → Methyl 7-oxabicyclo[2.2.1]hept-5-ene-2-sulfonate

To a four-necked flask having a capacity of 300 mL and equipped with a stirrer, a dropping funnel, and a thermometer, 150 g (2.20 mol) of furan and 15.0 g of zinc iodide were added, and 41.5 g (0.34 mol) of methyl vinylsulfonate was added to the flask from the dropping funnel at 25 to 27° C. The resultant mixture was continuously stirred at the same temperature for 2 days, and then the resultant reaction mixture was transferred to a 1 L separatory funnel. The reaction mixture was washed twice with 300 mL of water, and then unreacted furan was removed through evaporation under reduced pressure, to thereby obtain 22.0 g of methyl 7-oxabicyclo[2.2.1]hept-2-ene-5-sulfonate.

1. customTo a four-necked flask having
2. customa capacity of 300 mL and equipped with a stirrer, a dropping funnel
3. customthe resultant reaction mixture
4. customwas transferred to a 1 L separatory funnel
5. washThe reaction mixture was washed twice with 300 mL of water
6. customunreacted furan was removed through evaporation under reduced pressure

ORD record

ord-5c6842535dbd474da14598b2e3430178

Source dataset

uspto-grants-2015_10

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US09152042B2