Selective Oxidation of 8,8′-Hydroxylated Binaphthols to Bis-spironaphthalenones or Binaphtho-para- and Binaphtho-ortho-quinones
摘要:
The selective oxidation of a series of functionalized 8,8'-hydroxylated binaphthols to binaphtho-para- and binaphtho-ortho-quinones has been realized using either a Co-salen catalyst or ortho-iodoxybenzoic acid. A unique spirocyclic bis-spironaphthalenone was also obtained in good yield via a phenyliodonium diacetate promoted oxidative dearomatization.
Selective Oxidation of 8,8′-Hydroxylated Binaphthols to Bis-spironaphthalenones or Binaphtho-<i>para</i>- and Binaphtho-<i>ortho</i>-quinones
作者:Erin E. Podlesny、Patrick J. Carroll、Marisa C. Kozlowski
DOI:10.1021/ol302195e
日期:2012.9.21
The selective oxidation of a series of functionalized 8,8'-hydroxylated binaphthols to binaphtho-para- and binaphtho-ortho-quinones has been realized using either a Co-salen catalyst or ortho-iodoxybenzoic acid. A unique spirocyclic bis-spironaphthalenone was also obtained in good yield via a phenyliodonium diacetate promoted oxidative dearomatization.
Enantioselective Total Synthesis of (<i>S</i>)-Bisoranjidiol, an Axially Chiral Bisanthraquinone
作者:Erin E. Podlesny、Marisa C. Kozlowski
DOI:10.1021/ol3001365
日期:2012.3.16
The first enantioselectivetotalsynthesis of the bisanthraquinone (S)-bisoranjidiol and an unnatural regioisomer has been accomplished. Key features of the synthesis include the asymmetricoxidativebiarylcoupling of a hindered 8-substituted 2-naphthol, selective para-quinone formation, and regioselective tandem Diels–Alder/aromatization reactions.
首次对映选择性全合成双蒽醌( S )-bisoranjidiol 和非天然区域异构体。该合成的关键特征包括受阻 8-取代 2-萘酚的不对称氧化联芳偶联、选择性对醌形成和区域选择性串联 Diels-Alder/芳构化反应。