Organic reactions at high pressure. Asymmetric induction in the diels-alder reaction of -benzoquinone with chiral 2,4-pentadienoic acid derivatives
作者:William G Dauben、Richard A Bunce
DOI:10.1016/s0040-4039(00)85736-6
日期:1982.1
Asymmetric induction in the highpressure (15 kbar, 1.5 GPa) Diels-Alderreaction of -benzoquinone with chiral 2,4-pentadienoic acid derivatives is evaluated. The reactions afford 4a,5,8,8a-tetrahydro-1,4-naphthalenediones in up to 50% enantiomeric excess.
Organic reactions at high pressure. The Diels-Alder reaction of -benzoquinone with dienic esters
作者:William G. Dauben、William R. Baker
DOI:10.1016/s0040-4039(00)87410-9
日期:1982.1
The Diels-Alderreaction of -benzoquinone with substituted dienoic esters affords good yields of 4a,5,8,a-tetrahydro-1,4-naphthalenediones, free from the isomeric hydroquinone. The reactions were conducted at room temperature under 15 kbar (1.5 GPa) pressure in dichloromethane solutions.