Rhenium- and manganese-catalyzedreactions between beta-keto esters and acetylenes, followed by treatment with tetrabutylammonium fluoride, gave 2-pyranone derivatives regioselectively.
Rhenium Complexes with a Pyridinyl‐Naphthyridine Ligand: Synthesis, Characterization, and Catalytic Activity
作者:Tzu‐Chieh Su、Yi‐Hung Liu、Shie‐Ming Peng、Shiuh‐Tzung Liu
DOI:10.1002/ejic.201201413
日期:2013.5
Treatment of [Re2(CO)8(CH3CN)2] with 2,7-dipyridinyl-1,8-naphthyridine (bpnp) thermally provided mononuclear [(N,N′-bpnp)Re(CO)3Cl] (1). Further reaction of 1 with rheniumcarbonyls yielded ortho-metallation dinuclear rheniumcomplex2. Both complexes were characterized by spectroscopic analyses and single-crystal X-ray determination. Complex1 also reacted with [PdMeCl(COD)] and [Ir(COD)Cl]2 by means of
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.