SYNTHESIS OF 2,2’’-BIFLAVANONES

来源 :Chinese Chemical Letters | 被引量 : 0次 | 上传用户:Youmi8787
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
A new approach to the synthesis of 2,2″-biflavanones by the reductivedimerization of flavones is reported.The racemate and meso compounds of eachbitlavanone have been separated and their structures have been determined on the basis oftheir spectral data.
其他文献
新世纪以来,新一届领导集体更加关注“三农”问题,称其为“全党工作的重中之重”。贫困山区农业基础比较差,需要不断加强基础设施建设;农村发展严重落后,需要尽快采取办法进行解决
On-line ion-exchange separation and preconcentration were combined with flow-injection hydride generation atomic absorption spectrometry (HGAAS) to determine ultr
Under the condition of solid-liquid phase transfer catalysis,olefins were obtained by the reaction of p-nitrobenzyldibutyltelluroniumbromide with aromatic aldeh
The structures of Nylon-1010 with different draw ratios have been investigated by using Small-AngleX-ray Scattering(SAXS).It is shown that by using a simple geo
Alkylated propargyl bromides react with phosphiaes inacidic tetrahydrofuran solution to give propargylic phosphoniumsalts in good yield.
The asymmetric alkylations of chiral transition metal complexes derived from(+)-camphor and 2-aminomethyl-6-methylpyridine were examined under mildconditions.Th
A new solvent polymeric membrane (SPM)pH2sensor based on 4,4’-bis (N, N-didecylamino)methyl)azobenzene as neutral carricr has been reported. It has excellent p
采用新的教育理念成果导向实现办公软件与设备应用课程教学,调动学生学习的自主学习,合作学习的能力,实现将具有不同学习能力的学生将用不同时间、通过不同途径和方式,达到同
充电器是一种直流稳压电源,是非常典型的、常用的电子产品,几乎所有的电子设备都需要充电器作为供电系统。充电器的制作和调试可以作为一个教学项目来进行项目教学,本项目将
Two oxoperoxomolytxlenum(Ⅵ)complexes,MoO(O<sub>2</sub>)(OCH<sub>2</sub>CH<sub>2</sub>)<sub>2</sub>NH.H<sub>2</sub>O(5)andMoO(O<sub>2</sub>)(OCH(CH<sub>3</sub>)CH<sub&am