The synthetically useful chiral synthons, ( R )- and ( S )-2-cyclohepten-1-ol, can be prepared by an enantioselective transesterification of racemic trans ...
Suzuki aryl cross-couplings employing aryl bromides and aryl iodides proceed under mild conditions (65 degrees C) with high efficiency (substrate-to-cataly...
Suzuki aryl cross-couplings employing aryl bromides and aryl iodides proceed under mild conditions (65 degrees C) with high efficiency (substrate-to-cataly...
Aqueous-phase oligomer formation from methylglyoxal, a major atmospheric photooxidation product, has been investigated in a simulated cloud matrix under da...
The complex [Rh(kappa(3)-N,N,N-pybox)(CO)][PF(6)] (1) has been prepared by reaction of the precursor [Rh(mu-Cl)(eta(2)-C(2)H(4))(2)](2), 2,6-bis[4'(S)-isop...
Under the influence of titanium tetraiodide reductive imino-aldol reaction of theN-tosylimine derived from ethyl glyoxylate proceeded with aldimines to giv...
Syntheses of both title compounds have been achieved with excellent stereocontrol using chiral acetate enolate equivalents derived from the iron acetyl com...
The aldol reaction of (o-alkoxyacetophenone)chromium complexes with boron enolates gave predominantly one diastereomeric product as a result of attack at t...
The title compound (1) has been synthesized from perhydro-4伪-methoxy-5,5,8a-trimethylnaphthalen-1-one (12). The formyl derivative (14) was subjected to Robinson annelation with 4- diethylaminobutan-2-one methiodide to obtain the adduct ...
Enantiomeric excesses of 95-96% are obtained by the asymmetric hydrogenation of α-acylaminoacrylic acids. The olefin configuration, whether E or Z, has a profound influence on the rate and stereospecificity. Excellent selectivity (90% e...
Rhodium (I) -diphosphine complexes catalyze the aldol addition of enolsilanes to aldehydes, an enantioselective version being possible if chiral phosphines...
Highly enantioselective cross aldol reaction between aromatic ketones and various aldehydes is achieved via divalent tin enolates employing chiral diamines derived from (S)-proline as ligands.
The aldol adduct formed from addition of pivalaldehyde to the lithium enolate of pinacolone crystallized directly from the reaction mixture and was subjected to x-ray diffraction analysis.
Stable alkylcobalt carbonyls of the general formula ROOCCH2Co(CO)3L(R = alkyl, CH2Ph; L = CO, EPh3; E = P, As, Sb) were prepared. The molecular structure o...
The proposed cross aldolization of α-bromoketones with aldehydes in presence of Chromium (II) chloride is an excellent stereospecific reaction. One except...
Alkylation of sodium cyclopentadienyl(tricarbonyl)metallates of tungsten and molybdenum with alpha -chloro ketones and alpha -chloro esters gives stable tu...
ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a Chem...
ChemInform is a weeklying Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInformof ...
The aldol reaction of silyl enolates with aldehydes or acetals using a lanthanide trifluoromethanesulfonate as catalyst smoothly proceed in organic solvent...
In situ IR spectroscopy and transmetalation experiments confirm a postulated catalytic cycle. The metalloenolate 1 describes the active intermediate in the...
ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a Chem...
Catalytic amounts of ruthenium (II) catalyzed the efficient cross aldol reactions of aryl alkyl ketones with aromatic and heteroaromatic aldehydes without ...
Structure and reactivity of C - and N -bound isomers of transition metal cyanocarbanions are described. A series of C -bound ruthenium phosphine complexes,...
The reactions of nitriles, activated by ruthenium catalysts, lead to a variety of products such as the aldol adducts (III) or the Michael adducts (IV) and ...
