Palladium/zinc co-catalyzed asymmetric transfer hydrogenation of oxabenzonorbornadienes with alcohols as hydrogen sources
作者:Fujie Ma、Jingchao Chen、Fan Yang、Madhuri Vikas Shinde、Yongyun Zhou、Baomin Fan
DOI:10.1039/c7ob00175d
日期:——
Asymmetric transfer hydrogenation of oxabenzonorbornadienes was realized by using alcohols as hydrogensources under a co-catalytic system of palladium and zinc. Both primary and secondary alcohols could serve as reductants and afforded enantiomerically enriched 1,2-dihydronaphth-1-ol products with high optical purities.
7-Oxabicyclo[2.2.1]hept-2-ene and related materials by reductive elimination
作者:Seid Mirsadeghi、Bruce Rickborn
DOI:10.1021/jo00222a028
日期:1985.11
β-Hydroxy carbocation intermediates in solvolyses of di- and tetra-hydronaphthalene substrates
作者:Jaya S Kudavalli、Rory A More O'Ferrall
DOI:10.3762/bjoc.6.118
日期:——
the cis isomer unusually rapidly. Comparison of rates of solvolysis of 1-chloro-1,2,3,4-tetrahydronaphthalene and the corresponding (cis) substrate with a 2-hydroxy group indicates that a beta-OH slows the reaction by nearly 2000-fold, which represents a typical inductive effect characteristic also of cis-dihydrodiol substrates. The slow reaction of the trans-dihydrodiol substrate is consistent with initial
Hyperaromatic Stabilization of Arenium Ions: Acid-Catalyzed Dehydration of 2-Substituted 1,2-Dihydro-1-naphthols
作者:Jaya Satyanarayana Kudavalli、Dara Coyne、Rory A. More O’Ferrall
DOI:10.1021/jo2020483
日期:2012.1.6
correlation is taken to indicate that cis substuents are reacting normally, differentiated only by their inductive effects. The slower reactions of the trans isomers are the judged to be “abnormal”. This is confirmed by comparing effects of cis and trans β-OH substituents on the reactivities of dihydro phenols, naphthols, and phenanthrols. Whereas kH/kOH for cis substituents varies by less than 8-fold