http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Jung, Ene Jin,Park, Byung Ho,Lee, Yong Rok Royal Society of Chemistry 2010 GREEN CHEMISTRY Vol.12 No.11
<P>In water medium, environmentally benign, facile, and efficient synthesis of pyrans was achieved in good yields by the reactions of a variety of cyclic 1,3-dicarbonyls with several α,β-unsaturated aldehydes. The key strategy was a formal [3+3] cycloaddition by domino Knoevenagel/6π- electrocyclization. This methodology was applied to the synthesis of biologically interesting pyranocoumarin, pyranoquinolinone, and pyranonaphthoquinone derivatives along with selected natural and non-natural products.</P> <P>Graphic Abstract</P><P>In water medium, environmentally benign, facile, and efficient synthesis of pyrans was achieved in good yields by the reactions of a variety of cyclic 1,3-dicarbonyls with several α,β-unsaturated aldehydes. The key strategy was a formal [3+3] cycloaddition by domino Knoevenagel/6π-electrocyclization. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c0gc00265h'> </P>
김지연,이경순,유언희,이유미,정서영,황소희,우혜경,정혜진 梨花女子大學校 藥學硏究所 1986 梨花藥學硏究 Vol.- No.25
Addition of a coloring agent to groceryes is a generally available method to stimulate one's appetite. In order to investigate to use a coloring agent according to the rules, we take yellow radish and rainbow rice cake selling in the market for a sample. At first, we extracted coloring matter from the sample and examined qualitative and quantitive analysis. We used woolen yarn method as qualitative analysis and paperchromatography method as identification, uv method as quantatitive analysis. According to the result of the experiment, none of sample was used non permission coloring matter but it is permission coloring matter, it's amount to be found surplus.