Dicyclopentadiene → HCID 131721858, compound

Temperature

160 °C

Vinyl hexanoate (100 ml) and dicyclopentadiene (15 ml) were brought to reflux under nitrogen (160° C.). Over a period of 24-36 h, a further 9 additions (each 15 ml) of dicyclopentadiene were made, and heating under reflux continued. During this time, the temperature of the boiling liquid increased until after the last addition it was about 205° C. Excess starting materials were then allowed to distil off. After cooling of the mixture to 50° C., methanol (200 ml) was added and the precipitate allowed to form and settle, cooling to 20° C. The ester solution was decanted off and the precipitate washed with a further batch of methanol (100 ml). The methanol solutions were combined and evaporated under reduced pressure at 40-50° C. to yield about 114 g crude norbornenyl hexanoate (estimated molar yield 25% based on the vinyl hexanoate). This material was suitable for biotransformation.

1. temperatureheating
2. temperatureunder reflux
3. temperatureDuring this time, the temperature of the boiling liquid increased until
4. additionafter the last addition it
5. customwas about 205° C
6. customto distil off
7. temperatureAfter cooling of the mixture to 50° C.
8. additionmethanol (200 ml) was added
9. customto form
10. temperaturecooling to 20° C
11. customThe ester solution was decanted off
12. washthe precipitate washed with a further batch of methanol (100 ml)
13. customevaporated under reduced pressure at 40-50° C.

ORD record

ord-4a672d731fb4476787ba0c71f6f1b056

Source dataset

uspto-grants-2000_06

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US06075156