Volatile asymmetric fluorinated (O^N)-chelated palladium complexes: From ligand sources to MOCVD application
摘要:
The work deals with the volatile asymmetric palladium complexes of beta-ketoiminate-type as a new direction to design the effective partially fluorinated ((ON)-N-boolean AND)-chelated precursors for metal-organic chemical vapor deposition (MOCVD). To determine the effect of the substituent on the donor nitrogen atom, [Pd(CF3COCHCN(R)CH3)(2)](2) complexes with R = CH3 (Mei-tfac) and N(CH3)(2) (dmht) were synthesized and characterized by elemental analysis, IR and NMR spectroscopy. The molecular and crystal structures of the complexes as well as the initial ligand sources HMei-tfac and Hdmht were determined by single-crystal XRD. The obtained a new crystallographic and thermal (TG/DTA) information combined with the crystal lattice energy calculations allowed to reveal the features of the N-substituted fluorinated complexes in comparison with their non-fluorinated analogs. The possibility of using the proposed compounds as MOCVD precursors was experimentally confirmed. (C) 2019 Elsevier Ltd. All rights reserved.
aza-Annulation of β-aminovinyl trifluoromethyl ketones with acryloyl chloride: an efficient synthesis of 5-(trifluoroacetyl)-3,4-dihydro-2(1H)-pyridinones
作者:Nataliya V. Lyutenko、Igor I. Gerus
DOI:10.1016/j.tetlet.2013.05.108
日期:2013.7
The first example of aza-annulation of β-aminovinyl trifluoromethyl ketones with acryloyl chloride has been studied. 5-Trifluoroacetyl-containing 3,4-dihydro-2(1H)-pyridinones 3a–j were obtained from β-substituted enaminones 2a–j, whereas β-unsubstituted enaminone 4 gave a mixture of cyclic and acyclic products.
Regioselective reactions of β-aminovinyl trifluoromethyl ketones with tosyl isocyanate
作者:Natalie V Lyutenko、Igor I Gerus、Alexey D Kacharov、Valery P Kukhar
DOI:10.1016/s0040-4020(03)00106-6
日期:2003.3
The NH- and α-CH-insertion reactions of tosyl isocyanate with N-monosubstituted and N,N-disubstituted trifluoromethyl-containing enaminones have been studied. The regioselectivity of N-tosylcarbomoylation of N-monosubstituted β-aminovinyl trifluoromethyl ketones depends on the structure of enaminones, the reaction temperature, the nature of solvent and catalyst. The Z configuration of fluorinated vinylogous
The work deals with the volatile asymmetric palladium complexes of beta-ketoiminate-type as a new direction to design the effective partially fluorinated ((ON)-N-boolean AND)-chelated precursors for metal-organic chemical vapor deposition (MOCVD). To determine the effect of the substituent on the donor nitrogen atom, [Pd(CF3COCHCN(R)CH3)(2)](2) complexes with R = CH3 (Mei-tfac) and N(CH3)(2) (dmht) were synthesized and characterized by elemental analysis, IR and NMR spectroscopy. The molecular and crystal structures of the complexes as well as the initial ligand sources HMei-tfac and Hdmht were determined by single-crystal XRD. The obtained a new crystallographic and thermal (TG/DTA) information combined with the crystal lattice energy calculations allowed to reveal the features of the N-substituted fluorinated complexes in comparison with their non-fluorinated analogs. The possibility of using the proposed compounds as MOCVD precursors was experimentally confirmed. (C) 2019 Elsevier Ltd. All rights reserved.