SnCl4–Zn: a novel reductive system for deoxygenative coupling of aliphatic, aromatic, chalcone epoxide, and indanone carbonyl compounds to olefins
作者:Gulab Khushalrao Pathe、Naseem Ahmed
DOI:10.1016/j.tetlet.2015.01.194
日期:2015.3
SnCl4–Zn complex provided a novel reductive system in the deoxygenative cross-coupling of aliphatic, aromatic, chalcone epoxide and indanone carbonyl compounds to olefins in high yield (55–86%) at reflux temperature in THF. The advantage of this reagent is inexpensive, short reaction time, and high yield compared to the reagents used in the McMurry cross-coupling reaction.
Diazomethane Radical Cations as a Dipolarophile in the Dimeric Olefin Formation from Diazo-compounds
作者:Katsuya Ishiguro、Yasuhiko Sawaki、Hiizu Iwamura
DOI:10.1246/cl.1987.1853
日期:1987.9.5
A novel cycloaddition mechanism involving diazomethane radical cations is proposed for the dimeric olefin formation by the one-electron oxidation of diazo-compounds. The preference of cis-stilbene formation from phenyldiazomethane is understood by a secondary orbital interaction of phenyl groups on the cycloaddition step.
Potentielle Antiöstrogene vom Typ des 1,2-Diphenyl-1-pyridyl-but-1-ens Teil 1: Synthese
作者:Walter Schwarz、Rolf W. Hartmann、Helmut Schönenberger
DOI:10.1002/ardp.19913240407
日期:——
Es wird über die Synthese potentieller Antiöstrogene vomTypdes 1,2‐Diphenyl‐1‐pyridyl‐but‐1‐ens berichtet. Die Herstellung der Schlüsselverbindungen 1‐(4‐Methoxyphenyl)‐1‐(4‐ bzw. 3‐pyridyl)‐2‐phenyl‐but‐1‐en(E/Z‐1c bzw. E/Z‐2c) erfolgte durch Kupplung des entspr. 4‐Methoxyphenylpyridylketons mit Propiophenon mit TiCl4/Zn als Reduktionsmittel. Durch Etherspaltung wurden die Phenole 1 und 2 und daraus
Anti-proliferative activities of flavone–estradiol Stille-coupling adducts and of indanone-based compounds obtained by SnCl<sub>4</sub>/Zn-catalysed McMurry cross-coupling reactions
作者:Gulab Khushalrao Pathe、Naveen K. Konduru、Iram Parveen、Naseem Ahmed
DOI:10.1039/c5ra15685h
日期:——
Flavone–estradiol adducts and indanophen based tamoxifen analogs are synthesized using SnCl4–Zn reagent via McMurry reaction and evaluated in human cervical (HeLa) and breast cancer cells (MCF-7 and MDA-MB-231) for the anti-proliferative activity.
Activation of Low-Valent Titanium Reagents with Iodine: Facile Low-Temperature McMurry Reaction and <i>N</i>/<i>O</i>-Debenzylation/Deallylation
作者:Sanjay Talukdar、Sandip K. Nayak、Asoke Banerji
DOI:10.1021/jo971751v
日期:1998.7.1
A highly reactive, low-valent titanium (LVT) reagent has been prepared by the addition of substoichiometric amounts of iodine, to the LVT species generated by Rieke's method (TiCl3-Li-THF). While the conventional McMurry reaction requires high temperatures and prolonged reaction times for the generation of olefins, the present activated LVT reagent is able to effect the reductive coupling of aliphatic as well as aromatic carbonyls to the corresponding olefins at lower temperatures and much reduced reaction times. The protocol is also useful for the intramolecular coupling reactions leading to the one-step synthesis' of heterocycles. The temperature-controlled McMurry reaction provides enhanced diastereoselectivity and features an excellent chemoselectivity. In addition to the McMurry reaction, other SET-induced carbon-heteroatom (O, N) bond cleavages can also be carried out with the activated reagent at a fast rate and at a low temperature in high yields.