Phase-Transfer-Catalyzed Alkylation of Anthrone and 10-Propargylanthrone
作者:K. C. Majumdar、S. K. Chattopadhyay、A. T. Khan
DOI:10.1055/s-1988-27636
日期:——
Phase-transfer-catalyzed alkylation of anthrone with a variety of active alkyl halides gave mainly C,C-dialkylated products, whereas that of 10-propargylanthrone with dimethyl sulphate and allyl bromide gave O-alkylated products.
Spiro-Annulation <i>via</i> Ring Closing Metathesis Reaction
作者:Sambasivarao Kotha、Ethirajan Manivannan、Thota Ganesh、Nampally Sreenivasachary、Ashoke Deb
DOI:10.1055/s-1999-2896
日期:——
Various spiro cyclic systems are prepared from β-di-carbonyl compounds and active methylene substrates via palladium catalyzed allylation and ring-closing metathesis (RCM) reaction as key steps.
[EN] NOVEL RUTHENIUM COMPLEX, METHOD OF ITS PRODUCTION AND ITS USE IN REACTION OF OLEFINE METATHESIS<br/>[FR] NOUVEAU COMPLEXE DE RUTHÉNIUM, SON PROCÉDÉ DE PRODUCTION ET SON UTILISATION DANS LA RÉACTION DE MÉTATHÈSE D'OLÉFINES
申请人:UNIV WARSZAWSKI
公开号:WO2018100515A1
公开(公告)日:2018-06-07
The invention relates to novel ruthenium complexes of formula (9). The invention also relates to the method for preparation of novel metal complexes of formula (9) and their use in olefin metathesis reactions.
In a Quest for Selectivity Paired with Activity: A Ruthenium Olefin Metathesis Catalyst Bearing an Unsymmetrical Phenanthrene‐Based N‐Heterocyclic Carbene
ruthenium olefin metathesis pre‐catalyst, [3‐benzyl‐1‐(10‐phenyl‐9‐phenanthryl)]‐2‐imidazolidinylidene}dichloro(o‐isopropoxyphenylmethylene)ruthenium(II), Ru‐3, bearing an unsymetrical N‐heterocyclic carbene (uNHC) ligand, has been synthesized. The initiation rate of Ru‐3 was examined by ring‐closing metathesis and cross‐metathesis reactions with a broad spectrum of olefins, showing an unprecendented
Sil-II’ was confirmed in a set of diverse metathesis reactions including ring-closing metathesis (RCM) and cross-metathesis (CM) of complex polyfunctional substrates of medicinal chemistry interest, including a challenging macrocyclization of the Pacritinib precursor. Compatibility of the new catalyst with various green solvents was checked and metathesis of Sildenafil and Tadalafil-based substrates was successfully