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
DUPUY, C.;LUCHE, J. L., TETRAHEDRON, 45,(1989) N1, C. 3437-3444
作者:DUPUY, C.、LUCHE, J. L.
DOI:——
日期:——
EL, GAIED M. M.;SELMI, A., J. SOC. CHIM. TUNIS., 2,(1987) N 6, C. 3-7
作者:EL, GAIED M. M.、SELMI, A.
DOI:——
日期:——
Reactions of Allyl Alcohols of the Pinane Series and of Their Epoxides in the Presence of Montmorillonite Clay
作者:Irina V. Il'ina、Konstantin P. Volcho、Dina V. Korchagina、Vladimir A. Barkhash、Nariman F. Salakhutdinov
DOI:10.1002/hlca.200790042
日期:2007.2
of allyl alcohols of the pinane series and of their epoxides in the presence of montmorilloniteclay in intra- and intermolecular reactions was studied. Mutual transformations of (+)-trans-pinocarveol ((+)-2) and (−)-myrtenol ((−)-3a) were major reactions of these compounds on askanite–bentonite clay (Schemes 1 and 2). However, the two reactions gave different isomerization products, indicating that