Syntheses of α-Pyrones Using Gold-Catalyzed Coupling Reactions
作者:Tuoping Luo、Mingji Dai、Shao-Liang Zheng、Stuart L. Schreiber
DOI:10.1021/ol200794w
日期:2011.6.3
Sequential alkyne activation of terminal alkynes and propiolic acids by gold(I) catalysts yields compounds having α-pyrone skeletons. Novel cascade reactions involving propiolic acids are reported that give rise to α-pyrones with different substitution patterns.
Environmentally Sustainable and Chemo-selectively Favorable Synthesis of Substituted 2<i>H</i>-Pyran-2-ones in Water under MWI
作者:Liang-Yan Cui、Xin Wang、Yan He、Xue-Sen Fan
DOI:10.1002/jccs.201300013
日期:2014.2
this paper, a novel synthesis of diversely substituted 2H‐pyran‐2‐ones via the tandem reaction of 3‐hydroxyhexa‐4,5‐allenic esters in waterunder the promotion of MWI has been developed. Compared with those reactions carried out in organic solvents, water mediated synthesis of poly‐substituted 2H‐pyran‐2‐ones is not only environmentallysustainable, but also chemo‐selectively favorable.