Cross-coupling of alcohols to value-added products by using sustainable catalytic reactions has gained attention in recent years. Isomerization of secondary allylic alcohol to the corresponding enolizable ketone is an atom economical and known transformation. Herein, a selective cross-coupling of secondary allylic alcohol and primary alcohol is reported to afford the corresponding α-alkenyl or alkylation
Aldolases as Leitmotiv - A Nonenzymatic Domino Aldol Reaction Triggered by Zinc Bisenolate and Polyenolate (ate) Complexes
作者:Michael Schmittel、Manas K. Ghorai
DOI:10.1055/s-2001-18766
日期:——
A new zinc(II) mediated sequential aldol reaction is described for the diastereoselective one-pot synthesis of tetrahydropyran-2,4-diols. The dependence of the yield on the ratio Zn2 +/enolate proposes that zinc(II) polyenolate and ate complexes may be involved.
Nickel‐Catalyzed Chemodivergent Coupling of Alcohols: Efficient Routes to Access α,α‐Disubstituted Ketones and α‐Substituted Chalcones
作者:Sadhna Bansal、Benudhar Punji
DOI:10.1002/chem.202304082
日期:2024.3.12
The chemodivergent nickel-catalyzed approach provides α,α-disubstituted ketones from aryl-substituted secondary alcohols and benzyl alcohols via the borrowinghydrogen (BH) strategy in the presence of KOtBu, whereas exclusively α-substituted chalcones were accomplished in the presence of mild base K2CO3 through an acceptorless dehydrogenative coupling (ADC) strategy.
化学发散镍催化方法在 KO t Bu 存在下通过借氢 (BH) 策略从芳基取代的仲醇和苯甲醇提供α , α-二取代酮,而仅α-取代查耳酮是在 KO t Bu 存在下完成的。通过无受体脱氢偶联 (ADC) 策略实现弱碱 K 2 CO 3 。
Difluorocyclopentenone Synthesis
作者:Paul E. Harrington、Lianhai Li、Marcus A. Tius
DOI:10.1021/jo9900477
日期:1999.5.1
cyclization for the rapid assembly of gem-difluorinated cyclopentenones is described. 2,2,2-Trifluoroethanol is the cheap and convenient source of both fluorine atoms.
ZVAK, V.;KOVAC, J.;DANDAROVA, M.;GRACZA, T.;KRIZ, M., COLLECT. CZECH. CHEM. COMMUN., 1984, 49, N 8, 1764-1773
作者:ZVAK, V.、KOVAC, J.、DANDAROVA, M.、GRACZA, T.、KRIZ, M.