A palladium catalyzed atom-efficient cross-coupling reactivity of triarylbismuths with α,β-unsaturated acyl chlorides
作者:Maddali L.N. Rao、Varadhachari Venkatesh、Deepak N. Jadhav
DOI:10.1016/j.jorganchem.2008.05.012
日期:2008.7
An atom-efficientcross-coupling reactivity of triarylbismuths (1 equiv) was demonstrated by cross-couplingreaction with 3 equiv of α,β-unsaturated acylchlorides under palladium catalysis in the synthesis of a series of functionalized α, β-unsaturated ketones in high isolated yields.
Copper-Catalyzed Oxidative Transformation of Secondary Alcohols to 1,5-Disubstituted Tetrazoles
作者:Balaji V. Rokade、Karthik Gadde、Kandikere Ramaiah Prabhu
DOI:10.1002/adsc.201300863
日期:2014.3.24
A mild and convenient oxidativetransformation of secondaryalcohols to 1,5‐disubstituted tetrazoles is uncovered by employing trimethylsilyl azide (TMSN3) as a nitrogen source in the presence of a catalytic amount of copper(II) perchlorate hexahydrate [Cu(ClO4)2.6 H2O] (5 mol%) and 2,3‐dichloro‐5,6‐dicyano‐para‐benzoquinone (DDQ) (1.2 equiv.) as an oxidant. This reaction is performed under ambient
在催化量的高氯酸铜(II)六水合物[Cu(ClO 4)]存在下,通过使用三甲基叠氮化硅(TMSN 3)作为氮源,发现了中等程度的醇向1,5-二取代的四唑进行温和且方便的氧化转化。2 。6 H 2 O](5 mol%)和2,3-二氯-5,6-二氰基对苯醌(DDQ)(1.2当量)作为氧化剂。该反应在环境条件下进行,并通过CC键裂解进行。
Screening of Biological Activities of a Series of Chalcone Derivatives against Human Pathogenic Microorganisms
In an effort to develop new antimicrobial agents, a series of chalconederivatives, 3-60, were prepared by Claisen-Schmidt condensation of appropriate acetophenones and 2-furyl methyl ketones with appropriate aromatic aldehydes, furfural, and thiophene-2-carbaldehyde in an aqueous solution of NaOH and EtOH at room temperature. The synthesized compounds were characterized by means of their IR- and NMR-spectral
Process for preparing vinyl substituted beta-diketones
申请人:Southard E. Glen
公开号:US20060069288A1
公开(公告)日:2006-03-30
A process for preparing vinyl substituted beta-diketones includes reacting a halogen-containing beta-diketone with an olefin in a reaction zone under Heck coupling reaction conditions in the presence of a catalyst, a base, and an organic phosphine to provide a vinyl substituted beta-diketone product.
Synthesis of Vinyl-Substituted β-Diketones for Polymerizable Metal Complexes
作者:Glen E. Southard、George M. Murray
DOI:10.1021/jo051051n
日期:2005.10.1
metal ion coordination have been prepared and characterized. Bromine-substituted β-diketones were synthesized under Claisen−Schmidt-type condensation conditions. Vinyl groups were substituted for the halide by one of two types of Heck coupling with high-pressure ethylene. The type of Heck coupling employed was dictated by the thermal sensitivity of the substrate. Seven vinyl-substituted β-diketones were