Transformations of (-)-myrtenal epoxide over askanite-bentonite clay
摘要:
Acid-catalyzed transformations of (-)-myrtenal epoxide over askanite-bentonite clay involve skeletal rearrangements of the pinane framework, leading to an optically active dialdehyde (an analog of campholenic aldehyde), aldehydes having a p-menthane skeleton, and an unusual optically active aldehyde with a bicyclo[3.2.1]octene skeleton.
A convenient deoxygenation of α,β-epoxy ketones to enones
作者:Reginaldo B. dos Santos、Timothy John Brocksom、Ursula Brocksom
DOI:10.1016/s0040-4039(96)02451-3
日期:1997.2
A new and efficient methodology for the deoxygenation of α,β-epoxyketones to enones has been developed, using aminoiminomethanesulfinic acid (thiourea dioxide) as the reducing agent under phase transfer conditions. The epoxides of mesityl oxide, isophorone, (−)-carvone, (+)-6-methyl-carvone, (+)-6-ethyl-carvone and (−)-myrtenal, were converted into their respectives enones in good to excellent yields