Bis(μ-oxo)–Dititanium(IV)–Chiral Binaphthyldisulfonate Complexes for Highly Enantioselective Intramolecular Hydroalkoxylation of Nonactivated Alkenes
作者:Wen-Bin Xie、Zhi Li
DOI:10.1021/acscatal.1c01146
日期:2021.5.21
A series of chiral 1,1′-binaphthyl-2,2′-disulfonic acids was designed, synthesized, and applied in a highlyenantioselective Ti-catalyzed intramolecular hydroalkoxylation of nonactivated alkenes. The catalyst is probably a complex between two chiral binaphthyldisulfonate ligands and a bis(μ-oxo)–dititanium(IV) core structure. The sulfonamide groups of the ligands and water are necessary for the catalysis
Bi(OTf)3-catalyzed allylation of quinones with allyltrimethylsilane
作者:J.S Yadav、B.V.S Reddy、T Swamy
DOI:10.1016/s0040-4039(03)01130-4
日期:2003.6
p-Quinones react smoothly with allyltrimethylsilane in the presence of 2 mol%, of Bi(OTf)(3) under mild reaction conditions to afford the corresponding allyl substituted benzene derivatives, p-allylquinols and allyl substituted 1,4-naphthoquinones in excellent yields with high regioselectivity. This method is very useful for the direct introduction of an allyl functionality onto a quinone moiety. (C) 2003 Elsevier Science Ltd. All rights reserved.
Allylation of quinones with allyltin reagents
作者:Yoshinori Naruta
DOI:10.1021/ja00531a019
日期:1980.5
UBIQUINONE-1
作者:Naruta, Yoshinori、Maruyama, Kazuhiro
DOI:10.15227/orgsyn.071.0125
日期:——
Synthesis of a New type of Antioxidant possessing Inhibitory Activity against HMG-CoA Reductase
The 6-hydroxychromans (4) and (6), and 5-hydroxy-2,3-dihydrobenzo[b]furans (5) and (7) bearing a 4-hydroxypyran-2-one moiety were synthesized. All the compounds exhibited potent activity against lipid peroxidation. The chroman (4) possessed inhibitory activity against HMG-CoA reductase in addition to the antioxidant character.