A5005668757- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Catalytic C–H Functionalization Methods
- Organometallic Complex Synthesis and Catalysis
- Catalytic Cross-Coupling Reactions
- Synthesis of heterocyclic compounds
- Synthetic Organic Chemistry Methods
- Asymmetric Hydrogenation and Catalysis
- Porphyrin and Phthalocyanine Chemistry
- Organic Chemistry Synthesis Methods
- Ferrocene Chemistry and Applications
- Photochromic and Fluorescence Chemistry
- Synthesis and Biological Evaluation
- Crystallography and molecular interactions
- Catalytic Alkyne Reactions
- Molecular Junctions and Nanostructures
- Asymmetric Synthesis and Catalysis
- Metal complexes synthesis and properties
- Cyclopropane Reaction Mechanisms
- Multicomponent Synthesis of Heterocycles
- Chemical synthesis and pharmacological studies
- Synthesis and Characterization of Heterocyclic Compounds
- Metal-Catalyzed Oxygenation Mechanisms
- Microwave-Assisted Synthesis and Applications
- Surface Chemistry and Catalysis
Universidad Nacional Autónoma de México
2015-2024
Instituto de Tecnología Química
2015-2020
Universidad de Cuautitlán Izcalli
2013-2016
Laboratoire de Chimie de Coordination
2006
Centre National de la Recherche Scientifique
2006
Benemérita Universidad Autónoma de Puebla
2000
Universidad de Guanajuato
2000
Push–pull stilbenyl-azopyrrole dyes are efficiently obtained via a Heck cross-coupling reaction. Modifications of the acceptor character EWG might accelerate cis – trans photo-isomerization.
A new family of push-pull biphenyl-azopyrrole compounds 3b-g and 4b-d was efficiently obtained via a Suzuki cross-coupling reaction between 2-(4'-iodophenyl-azo)-N-methyl pyrrole (1a) or 3-(4'-iodophenyl-azo)-1,2,5-trimethyl (2a) 4'-substituted phenyl boronic acids in excellent yields. The influence the π-biphenyl backbone pattern substitution correlated with their optical properties. Solvatochromic studies UV-visible spectrophotometry revealed that inclusion 4'-nitro-biphenyl fragment...
An efficient and practical methodology for the synthesis of 3-substituted 4H-quinolizin-4-ones using (η(4)-vinylketene)-Fe(CO)3 complexes as key intermediates has been developed. The advantage this transformation lies in use simple readily available starting materials mild carbonylation conditions. fluorescent properties these compounds were determined quantum yield was obtained, ranging from 0.04 to 0.36 depending on substituent.
Photo-switching of Stenhouse donor–acceptor adducts by a non-linear optical input.
In this paper, the results obtained in synthesis of thioamides and α-ketothioamides by a modification Willgerodt–Kindler reaction, under solvent-free noncatalyst conditions using IR energy as source activation, are presented. The use these reactions has been shown to lead mixture thioamide α-ketothioamide main products most cases, with latter predominating. yields from better than those reported previously. To best our knowledge, is first time that applied promote reaction.
A new series of ferrocenyl selenoamides 7-11 (FcSeNH(CH(2))(n)CH(2)(R)OH, n = 1, 2, 3, R H, Me, Ph) were prepared in good yields by selenative demetalation Fischer aminocarbene complexes. The crystal structures 7 [FcSeNH(CH(2))(2)OH] and 19 [PhSeNH(CH(2))(2)OH] reveal their capability to form intermolecular hydrogen bonding solid state. Results SRB assays show that these selenium compounds have a anticancer potency superior tamoxifen cisplatin, with IC(50) values ranging from 4.5 13.32 μM...
We reported the synthesis, optical and redox behavior of six ferrocenyl D–π–A dyes. Optical electrochemical band gaps were determined corroborated by TD-DFT calculations. Compounds<bold>4</bold>exhibit smallest gap this series.
We herein report the synthesis and catalytic application of a new family [N,P] ligands based on pyrrole ring with alpha-phosphine or phosphole units. Their palladium complexes (3a-d) were obtained in very good yields their properties evaluated direct intramolecular arylation to obtain both benzopyranones phenanthridinones. The air stable complex 3a exhibited best performance this series complexes, using 1 mol% catalyst combination microwaves promote reaction.
We report the synthesis of new copper(I) complexes 6a−e from methyl 3-hydroxy-3-(p-R-phenyl)-2-propenedithioate ligands. These were characterized by IR and 1H, 13C, 31P NMR spectroscopy. The expected O,S-coordination mode was confirmed X-ray diffraction studies 6b 6e. unexpected dimerization 6b−e leads to formation four novel dinuclear compounds (7b−e). complex structure fully established analysis 7a, in which presence a Cu−Cu interaction observed.
Abstract A convenient synthesis of new chiral ferrocenene‐bridged phosphole–phosphane ligands in an enantiomerically pure form has been developed. These P,P have tested a palladium‐catalysed allylic substitution reaction. High activities and moderate enantioselectivities (up to 61 %) were observed. palladium(II) complex isolated its crystal structure established. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)
Abstract The reaction of bis(trimethylsilyl)ketene acetals 2 with N‐heterocycles containing either one or two nitrogen atoms in the presence triflic anhydride has been examined and structures resulting products compared those obtained by using methyl chloroformate as activating agent. Whereas pyridine, pyrazine, quinoxaline pyrimidine led to same type fused δ‐ γ‐lactones 4 , 6 8 10 11 chloroformate, behaviour pyridazine appeared be peculiar. In this heterocycle δ‐lactones 16 via stable...
Green chemistry is the design of chemical processes that reduce or eliminate negative environmental impacts. The use and production chemicals involve reduction waste products, non-toxic components, improved efficiency. applies innovative scientific solutions in new reagents, catalysts non-classical modes activation such as ultrasounds microwaves. Kinetic behavior non-thermal effect poly(amic acid) synthesized from (6FDA) dianhydride (BAPHF) diamine a low microwave absorbing p-dioxane solvent...
New 1,2-disubstituted ferrocenes [5(b–j), in which R = –SMe, –SPh, –SiPr, –SiMe3, –SePh, –SnBu3, –B(OH)2, –Me, –I] with a thiazoline ring the ferrocene backbone using as key intermediate ferrocenyl Fischer carbene complex were synthesized. The capability of 2-thiazoline moiety an ortho-directed metalation group was demonstrated by subsequent quenching lithium several electrophiles, proving to be excellent method for synthesizing bidentate ligands. catalytic scope [N,S] ligand 5b...
An efficient method to obtain chiral 1,2-disubstituted ferrocenyl ligands has been developed. The introduction of planar chirality was accomplished by using 2-thiazoline as an ortho-directing lithiation group, and moreover, these kinds possess a central from the amino alcohol used in their synthesis. X-ray analysis DFT calculations confirmed diastereoselectivity ortho-lithiation configuration chirality. ability new bidentate [N,S]-ferrocene act Pd-catalyzed asymmetric allylic alkylation also...
Abstract Three new stilbenyl‐azopyrroles 3 a – c were synthesized through Mizoroki‐Heck C−C‐type coupling reaction between the 2‐(4′‐iodophenyl‐azo)‐ N ‐methyl pyrrole ( 1 ), and three different para ‐substituted styrene derivatives. Inclusion of additional NO 2 NMe groups at para‐ position stilbenyl section resulted in significant changes their linear non‐linear optical properties. The photoisomerization behavior was studied ultrafast laser techniques for single‐ two‐photon excitation....