Reactions of tin porphyrins with vicinal diols were investigated. Treatment of (TTP)Sn(CCPh)(2) or (TTP)Sn(NHtolyl)(2) with pinacol and 2,3-diphenylbutane-2,3-diol afforded diolato complexes (TTP)Sn[OC(Me)(2)C(Me)(2)O] (1) and (TTP)Sn[OC(Ph)(Me)C(Ph)(Me)O] (2), respectively. Both complexes underwent C-C cleavage reactions to give (TTP)Sn(II) and ketones. Reaction of (TTP)Sn(CCPh)(2) with 1 equi...

Indium(III) triflate is found to be an effective catalyst for the benzannulation reactions of o-alkynylbenzaldehydes with enolisable aldehydes, ketones, 1,3-diketones and β-keto esters. The reactions produce naphthyl ketones through ring opening of adducts arising from the inverse electron demand Diels-Alder reactions between in situ generated isochromenylium cations and enols. The main feature...

A Pt(II)-catalyzed intramolecular chemo- and regioselective pentannulation/long-range 1,5-acyl migration reaction is described. This cascade cycloisomerization protocol produces a wide variety of benzofulvene diketones in good to excellent yields with exclusively the Z configuration of the exocyclic double bond of the final product. The (18)O isotope experiment together with (13)C NMR, HRMS, an...

Ferrocenyl-β-diketone ligands have been synthesised by the reaction of (ferrocenyl methyl) trimethyl ammonium iodide (FcCH2N Me3I ), where Fc=C5H5FeC5H4 – with sodium salt of -β-diketone [Na+CH-(COR1) (COR2), where R1= R2=CH 3, R1= CH 3 , R2=Ph, R1= R2=CMe 3 ]. The formula of the ligands (1-3) are FcCH 2 CH(COCH 3 )(COCH 3 ), FcCH 2 CH(COCH 3 )(COPh) and FcCH 2 CH(COCMe 3 ) 2 respectively. The ...

1,2-Diketones have been reacted in one-pot method with 1,2-diamines at room temperature with ZnO nanoparticles as a catalyst. ZnO nanoparticles as an available and reusable catalyst is used for the synthesis of Quinoxalinein improved yields.

The oxidation of a gasoline model-fuel (2500 ppm n-heptane and 2500 isooctane), called RON 50, was studied in jet-stirred reactor (JSR) over the temperature range 560 ? 700 K, at total pressure 10 atm, residence time 1.5 s, an equivalence ratio 0.5. Gas samples were collected as function temperature. Ignition 50/air mixtures also rapid compression machine (RCM) under same fuel-lean conditions, ...

condensation of aromatic aldehydes with benzoyl acetone under specified conditions yieldedtwo series of polycarbonyl compounds in which the keto group is attached to olefinic linkage.spectral and analytical data revealed the formation of an unsaturated triketone from pyridine-3-carbaldehyde and unsaturated diketone from furfural, salicylaldehyde and 2-hydroxynaphthaldehyde. analytical, ir, 1h n...

oxidation of some benzoins to benziles is reported by using p-toluenesulfonic acid as aselective oxidation catalyst under solvent-free condition in high yield. the adjacent carbonylgroup is necessary for the oxidation of hydroxyl group in these compounds. the reaction iscarried out in a sand-bath at 100 °c with minimum by-products.