Chemistry is traditionally divided into organic and inorganic chemistry. name: Bis(dibenzylideneacetone)palladium, The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent，Which mentioned a new discovery about 32005-36-0
Palladacycles derived from l-tyrosine methyl ester, (S)-[Pd 2{C,N-C6H3CH2CH(CO 2Me)NH2-2,(OH)-4}2(mu-Br)2] (1a-Br), and homoveratrylamine, [Pd2{C,N-C6H 2CH2CH2NH2-6,(OMe) 2-3,4}2(mu-Br)2] (1b-Br), can be easily prepared in good yield by reacting Pd(OAc)2, the corresponding ammonium triflate, and NaBr. Under the same conditions, the reaction of Pd(OAc)2 with the free amine affords a low yield of the corresponding acetato complex 1a-OAc or 1b-OAc (the latter only detected in solution). In our hands, the previously reported palladation at the C2 position of homoveratrylamine with Pd(OAc)2 is not observed. Instead, a complex mixture is obtained, mainly containing [Pd(OAc)2{NH 2CH2CH2C6H3(OMe) 2-3,4}2] and minor amounts of 1b-OAc, which reacts with NaBr to afford a new mixture from which [PdBr2{NH2CH 2CH2C6H3(OMe)2-3,4} 2] can be isolated and characterized. These and other adducts can be isolated from Pd(OAc)2, homoveratrylamine, and various ligands (PPh3 and Br-). 6-Bromohomoveratrylamine reacts with Pd(dba)2 in the presence of tmeda to give the complex [Pd{C,N-C 6H2CH2CH2NH2-6,(OMe) 2-3,4}(tmeda)]Br. Reactions of complexes 1 with acetylacetonato or neutral (PR3) ligands give products resulting from substitution or bridge-splitting reactions. While 1a-Br reacts with XyNC (1:2 molar ratio) to give (S)-[Pd{C,N-C6H3CH2CH(CO 2Me)NH2-2,(OH)-4}Br(CNXy)], 1b-Br gives [Pd{C,N-C(=NXy)-C6H2CH2CH2NH 2-6,(OMe)2-3,4}Br(CNXy)]. (S)-7-Hydroxy-3- (methoxycarbonyl)-3,4-dihydroisoquinolin-1(2H)-one and 6,7-dimethoxy-3,4- dihydroisoquinolin-1(2H)-one (corydaldine) have been synthesized through the stoichiometric carbonylation of palladacycles 1a-Br and 1b-Br. The crystal structures of a solvento intermediate in the ortho-metalation reaction of the triflate derivative of l-tyrosine methyl ester and four other complexes have been determined by X-ray diffraction studies.
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Reference：
Chapter 1 An introduction to palladium catalysis,
Palladium/carbon catalyst regeneration and mechanical application method