Synthesis of benzyl esters from the commercially available alcohols catalyzed by TBAI via C(sp<sup>3</sup>)–H bond functionalization
作者:Dao-Qing Dong、Hui Zhang、Zu-Li Wang
DOI:10.1039/c6ra26387a
日期:——
A direct esterification of alcohols catalyzed by TBAI via C(sp3)–H bond functionalization was achieved under mild and clean conditions. A series of benzyl esters were obtained in good to excellent yields via the C(sp3)–H bond functionalization of alkyl-substituted azaarenes.
Bu4NI-catalyzed benzylic acyloxylation of alkylarenes with aromatic aldehydes
作者:Juan Huang、Lan-Tao Li、Hong-Ying Li、Ezizjan Husan、Peng Wang、Bin Wang
DOI:10.1039/c2cc35450k
日期:——
An nBu4NI-catalyzed benzylic C–H acyloxylation of alkylarenes with readily available aromatic aldehydes has been developed. These reactions occur under mild and clean reaction conditions using tert-butyl hydroperoxide as the green terminal oxidant.
Hydroxymethylations of Aryl Halides by Pd-Catalyzed Cross-Couplings with (Benzoyloxy)methylzinc Iodide - Scope and Limitations of the Reaction
作者:Michal Hocek、Zbyněk Hasník、Peter Šilhár
DOI:10.1055/s-2008-1032084
日期:——
Palladium-catalyzed cross-coupling reactions of (benzoyloxymethyl)zinc iodide with diverse (het)aryl halides leading to (benzoyloxymethyl)(het)arenes were studied to define the scope of this reaction. It has been found that this reaction is only applicable for electron-deficient aryl halides and the most efficient it is for 2-halopyridines and 4-halopyrimidines. Deprotection of the intermediates gives
Synthesis of 2-Pyridinemethyl Ester Derivatives from Aldehydes and 2-Alkylheterocycle <i>N</i>-Oxides via Copper-Catalyzed Tandem Oxidative Coupling–Rearrangement
作者:Chang-Sheng Wang、Thierry Roisnel、Pierre H. Dixneuf、Jean-François Soulé
DOI:10.1021/acs.orglett.7b03446
日期:2017.12.15
transfer of the resultant high yield formed Boekelheide intermediate. The method enables the preparation of functional heterocycles and the desymmetrization of 2,6-dialkylpyridines for efficient synthesis of dissymmetric pincer ligands, thus offering a new life for more practical Boekelheide rearrangement.
Substituierte (Chinolin-2-yl-methoxy)phenyl-carbonylharnstoffe können durch Umsetzung von substituierten (Chinolin-2-yl-methoxy)-anilinen mit Isocyanaten und gegebenenfalls anschließender Alkylierung hergestellt werden. Die substituierten (Chinolin-2-yl-methoxy)phenyl-carbonylharnstoffe können als Wirkstoffe in Arzneimitteln, insbesondere zur Hemmung enzymatischer Reaktionen im Rahmen des Arachidonsäuremetabolismus, eingesetzt werden.