32005-36-0, Name is Bis(dibenzylideneacetone)palladium, belongs to catalyst-palladium compound, is a common compound. Recommanded Product: 32005-36-0In an article, once mentioned the new application about 32005-36-0.
Linear and V-Shaped Alkynyl-1,3,5-triazines
A concise route for the synthesis of linear and V-shaped alkynyl-1,3,5-triazines has been developed by starting from 2,4-dichloro-1,3,5-triazine derivatives. The sequential substitution of the 2- and 4-chloro groups by a regioselective Sonogashira coupling reaction afforded symmetric and unsymmetric V-shaped alkynyl-1,3,5-triazines. A modulated copper-free Pd/1,10-phenanthroline catalyst system showed good compatibility with the -OCH3, -NPh2, and p-CH3OC6H4- substitutents and furnished the targeted linear alkynyl-1,3,5-triazines in good yields. A Pd/Ag bimetallic system afforded the desired symmetric and unsymmetric V-shaped alkynyl-1,3,5-triazines in moderate to good yields. The photophysical properties of the new alkynyl-1,3,5-triazine compounds were characterized experimentally. The X-ray diffraction analysis of 2a confirmed a coplanar position between the phenyl group and the 1,3,5-triazinal moiety. Intermolecular pi-pi interactions were observed between two of the TZ units, and the shortest atomic contact distance between the phenyl moieties of two adjacent molecules is 3.655 A. A protocol has been developed for the synthesis of alkynyl-1,3,5-triazines, especially unsymmetrical alkynyl-1,3,5-triazines with two different alkynyl groups on the triazine core. The Pd2(dba)3/1,10-phenanthroline catalyst system was used in a copper-free Sonogashira coupling reaction followed using a Pd/Ag bimetallic system for the subsequent alkynyl coupling step. dba = dibenzylideneacetone, 1,10-phen = 1,10-phenanthroline, DIPEA = N,N-diisopropylethylamine, and Tf = trifluoromethylsulfonyl.
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Reference：
Chapter 1 An introduction to palladium catalysis,
Palladium/carbon catalyst regeneration and mechanical application method