99861-33-3Relevant academic research and scientific papers
Total synthesis of (±)-maistemonine, (±)-stemonamide, and (±)-isomaistemonine
Chen, Zhi-Hua,Chen, Zhi-Min,Zhang, Yong-Qiang,Tu, Yong-Qiang,Zhang, Fu-Min
experimental part, p. 10173 - 10186 (2012/02/05)
A full account of the total synthesis of (±)-maistemonine, (±)-stemonamide, and (±)-isomaistemo-nine is presented. Two approaches have been developed to construct the basic pyrrolo[1,2-a]azepine core of the Stemona alkaloids, featuring a tandem semipinaco
Palladium-catalyzed stereocontrolled endo cyclization of 3-hydroxypropyl-1,3-cyclohexadiene leading to versatile fused tetrahydropyrans
Koroleva, Elise B.,Baeckvall, Jan-E.,Andersson, Pher G.
, p. 5397 - 5400 (2007/10/02)
A palladium-catalyzed synthesis of stereodefined fused tetrahydropyrans from 2-substituted 1,3-cyclohexadienes is presented. The reaction takes place via an intramolecular 1,4-oxidation of the conjugated diene via a (π-allyl)palladium intermediate. The st
SYNTHESES DE CYCLOHEXENONES α-SUBSTITUEES VIA LA THERMOLYSE DE CETOSULFOXYDES TERTIAIRES
Barillier, Daniel,Benhida, Rachid,Vazeux, Michel
, p. 83 - 96 (2007/10/02)
The sulfenylation-dehydrosulfenylation method, combined with carbon-carbon bond forming reactions, has been applied to the synthesis of some α-functionalized cyclohexenones 3.Hence, the sodium anion of the 2-methylthiocyclohexanone in THF reacts with primary, allyl and benzyl halides as well as with Michael acceptors to lead to the tertiary ketosulfides 1a-j.Further oxidation by NaIO4 and thermolysis in boiling toluene of the resulting sulfoxides 2 have been performed.The scope and limitations of this strategy are also discussed. Key Words: α-functionalized cyclohexenones; tertiary ketosulfides and ketosulfoxides; sulfenylation and deshydrosulfenylation; thermolysis.
Simple method for α-alkylation of α,β-unsaturated enones through the Michael addition
Hwu, Jih Ru,Hakimelahi, Gholam H.,Chou, Ching-Tai
, p. 6469 - 6472 (2007/10/02)
Treatment of enones and Michael acceptors with a catalytic amount of 1,8-diazabicyclo[5.4.0]undec-7-ene in 1,3-dimethyl-2-imidazolidinone at 185 °C afforded the corresponding α-substituted enones in good yields.
