Réaction #7365

Équation de réaction

bicyclo[2,2,1]-2-heptene

bicyclo[2,2,1]-2-heptene

butadiene

→

octahydro-1,4-methanonaphthalene

Rendement 145.8%

Conditions de réaction

Traitement

1. 1
   workup.DISTILLATIONdistilled at atmosphere
2. 2
   Autreto give
3. 3
   workup.DISTILLATIONFurther distillation at reduced pressure

Mode opératoire

A 400 ml autoclave was charged with bicyclo[2,2,1]-2-heptene (152 g, Aldrich), 4-methylphenol (1 g, Aldrich), and butadiene (110 g). The mixture was heated at 200° C. for 10 hours. The reaction mixtures from four identical reactions were combined and distilled at atmosphere to give starting bicyclo[2,2,1]-2-heptene (307 g). Further distillation at reduced pressure afforded octahydro-1,4-methanonaphthalene (349 g with 97–98% purity, bp 47° C./0.05 Torr, yield 73%, based on consumed bicyclo[2,2,1]-2-heptene) and about 120 g of product with lower purity (bp 47° C./2 Torr to 58° C./0.16 Torr).

Source