Lorell Thesis Final Version in PDF S
... finished. To my husband, Tito, who has given me the happiest days of my life and stood beside me in all the happy and stressful moments. To my daughter Lorelys Maia, she is my whole life and is always inspiring me how to be a better person overall. To my parents José and Betzaida, who always support ...
... finished. To my husband, Tito, who has given me the happiest days of my life and stood beside me in all the happy and stressful moments. To my daughter Lorelys Maia, she is my whole life and is always inspiring me how to be a better person overall. To my parents José and Betzaida, who always support ...
A Review of Surface Analysis Techniques for the
... Michalis Konsolakis Reprinted from Catalysts. Cite as: Konsolakis, M. Surface Chemistry and Catalysis. Catalysts 2016, 6, 102. 1. Background Nowadays, heterogeneous catalysis plays a prominent role. The majority of industrial chemical processes, involving the manufacturing of commodity chemicals, ph ...
... Michalis Konsolakis Reprinted from Catalysts. Cite as: Konsolakis, M. Surface Chemistry and Catalysis. Catalysts 2016, 6, 102. 1. Background Nowadays, heterogeneous catalysis plays a prominent role. The majority of industrial chemical processes, involving the manufacturing of commodity chemicals, ph ...
Alkenes and Alkynes I
... 6A. How to Favor an E2 Mechanism Use a secondary or tertiary alkyl halide if possible. (Because steric hinderance in the substrate will inhibit substitution) When a synthesis must begin with a primary alkyl halide, use a bulky base. (Because the steric bulk of the base will inhibit substitution) ...
... 6A. How to Favor an E2 Mechanism Use a secondary or tertiary alkyl halide if possible. (Because steric hinderance in the substrate will inhibit substitution) When a synthesis must begin with a primary alkyl halide, use a bulky base. (Because the steric bulk of the base will inhibit substitution) ...
Application of Novel Phosphine Ligands in Palladium
... formation and the release of the catalyst is called a catalytic cycle. After the catalyst is released, it can reenter the cycle. As an important consequence, only small amounts of catalyst are needed for enabling a reaction; theoretically, it is possible to convert all starting material molecules wi ...
... formation and the release of the catalyst is called a catalytic cycle. After the catalyst is released, it can reenter the cycle. As an important consequence, only small amounts of catalyst are needed for enabling a reaction; theoretically, it is possible to convert all starting material molecules wi ...
Project Overview
... Professor William Tam received his B.Sc. at the University of Hong Kong in 1990 and his Ph.D. at the University of Toronto (Canada) in 1995. He was an NSERC postdoctoral fellow at the Imperial College (UK) and at Harvard University (USA). He joined the Department of Chemistry at the University of Gu ...
... Professor William Tam received his B.Sc. at the University of Hong Kong in 1990 and his Ph.D. at the University of Toronto (Canada) in 1995. He was an NSERC postdoctoral fellow at the Imperial College (UK) and at Harvard University (USA). He joined the Department of Chemistry at the University of Gu ...
Acid-Catalyzed Hydration of Alkenes
... transition state for attack of water on bromonium ion has carbocation character; more stable transition state (left) has positive charge on more highly substituted carbon ...
... transition state for attack of water on bromonium ion has carbocation character; more stable transition state (left) has positive charge on more highly substituted carbon ...
Document
... Aldehydes and Ketones—Nucleophilic Addition Reactions of Aldehydes and Ketones—General It is important to know what nucleophiles will add to carbonyl groups. • Cl¯, Br¯ and I¯ are good nucleophiles in substitution reactions at sp3 hybridized carbons, but they are ineffective nucleophiles in additio ...
... Aldehydes and Ketones—Nucleophilic Addition Reactions of Aldehydes and Ketones—General It is important to know what nucleophiles will add to carbonyl groups. • Cl¯, Br¯ and I¯ are good nucleophiles in substitution reactions at sp3 hybridized carbons, but they are ineffective nucleophiles in additio ...
Part I Carbohydrate Auxiliaries - Wiley-VCH
... continuation of Kunz’s studies a general protocol for the asymmetric synthesis of α,β-diamino acids involving enantiomerically pure α-amino aldehydes, Opivaloylated glucopyranosylamine, and TMSCN was developed. The α-aminoaldehydes 14 reacted with glucopyranosylamine 13 in CH2Cl2 to give the corresp ...
... continuation of Kunz’s studies a general protocol for the asymmetric synthesis of α,β-diamino acids involving enantiomerically pure α-amino aldehydes, Opivaloylated glucopyranosylamine, and TMSCN was developed. The α-aminoaldehydes 14 reacted with glucopyranosylamine 13 in CH2Cl2 to give the corresp ...
The Organometallic Chemistry Of Transition Metals
... The early Russian investigator Chugaev first drew attention to the fact that chelating ligands are much less easily displaced from a complex than are monodentate ligands of the same type. The reason is illustrated in Eq. 1.1: [M(NH3 )6 ]n+ + 3en −−−→ [M(en)3 ]n+ + 6NH3 ...
... The early Russian investigator Chugaev first drew attention to the fact that chelating ligands are much less easily displaced from a complex than are monodentate ligands of the same type. The reason is illustrated in Eq. 1.1: [M(NH3 )6 ]n+ + 3en −−−→ [M(en)3 ]n+ + 6NH3 ...
Late Transition Metal Amido Complexes: Electronic
... 2 Late transition metal amido complexes: relevance for catalysis and MLC Amido complexes of late transition metals have been successfully applied in several catalytic C-N bond forming reactions. The introduction of these precious metal catalysts in the homogeneous olefin hydroamination represents an ...
... 2 Late transition metal amido complexes: relevance for catalysis and MLC Amido complexes of late transition metals have been successfully applied in several catalytic C-N bond forming reactions. The introduction of these precious metal catalysts in the homogeneous olefin hydroamination represents an ...
Transition Metal Reagents and Catalysts
... important types of reactions classi®ed mainly by representative substrates such as organic halides and allylic derivatives are surveyed with pertinent examples. For this purpose, I cited many references; these were selected from a much larger number which I have collected over the years. I wanted to ...
... important types of reactions classi®ed mainly by representative substrates such as organic halides and allylic derivatives are surveyed with pertinent examples. For this purpose, I cited many references; these were selected from a much larger number which I have collected over the years. I wanted to ...
19.7 Reversible Addition Reactions of Aldehydes and Ketones
... • Hydrogen bonding then serves to activate the carbonyl group ...
... • Hydrogen bonding then serves to activate the carbonyl group ...
Chapter - FIU Faculty Websites
... • In acetal synthesis, since water is formed as a by-product, the equilibrium can be driven to the right by removing H2O as it is formed using distillation or other techniques. Please note that hemiacetals can be hydrolyzed back to aldehydes or ketones in acidic and basic solutions while acetals can ...
... • In acetal synthesis, since water is formed as a by-product, the equilibrium can be driven to the right by removing H2O as it is formed using distillation or other techniques. Please note that hemiacetals can be hydrolyzed back to aldehydes or ketones in acidic and basic solutions while acetals can ...
Iodomethylzinc_iodid.. - Groupe Charette
... the Zn–Cu couple with CH2 I2 and a crystal of Iodine in Et2 O followed by heating to reflux generates the active reagent. Other modifications include the use of CH2 I2 /Zn/CuCl,12a CH2 I2 /Zn–Ag couple,12b CH2 Br2 /Zn/TiCl4 ,12c and CH2 Br2 /Zn/AcCl/CuCl.12d Type 2 reagent generation has been utiliz ...
... the Zn–Cu couple with CH2 I2 and a crystal of Iodine in Et2 O followed by heating to reflux generates the active reagent. Other modifications include the use of CH2 I2 /Zn/CuCl,12a CH2 I2 /Zn–Ag couple,12b CH2 Br2 /Zn/TiCl4 ,12c and CH2 Br2 /Zn/AcCl/CuCl.12d Type 2 reagent generation has been utiliz ...
Investigation of the steric and electronic properties of 3
... I would like to start of by acknowledging my parents and brother. Without your love and support over the past couple of decades, I don’t think I’d be half the person that I am today. The past three years here while obtaining this degree have helped me to realize all of that. To my folks, I couldn’t ...
... I would like to start of by acknowledging my parents and brother. Without your love and support over the past couple of decades, I don’t think I’d be half the person that I am today. The past three years here while obtaining this degree have helped me to realize all of that. To my folks, I couldn’t ...
The Carbonyl Group - Angelo State University
... Other Nomenclature Rules • In cyclic ketones, the carbonyl group is always numbered “1”; this does not need to be included in the name. The numbering continues clockwise or counterclockwise to give the lowest number for the next substituent. • Molecules with more than one ketone group are named by p ...
... Other Nomenclature Rules • In cyclic ketones, the carbonyl group is always numbered “1”; this does not need to be included in the name. The numbering continues clockwise or counterclockwise to give the lowest number for the next substituent. • Molecules with more than one ketone group are named by p ...
The Carbonyl Group Nomenclature of Aldehydes and Ketones
... 3-(para-Hydroxyphenyl)2-butanone Responsible for the odor of ripe raspberries. ...
... 3-(para-Hydroxyphenyl)2-butanone Responsible for the odor of ripe raspberries. ...
Novel Transition Metal-Catalysed Syntheses of Carboxylic Acid
... Consecutive reactions differ from tandem reactions in that another reagent, mediator or catalyst is added after the first transformation without isolation of the first formed product; the subsequent reaction steps then lead to the final product. Whilst some operational simplicity is lost, such react ...
... Consecutive reactions differ from tandem reactions in that another reagent, mediator or catalyst is added after the first transformation without isolation of the first formed product; the subsequent reaction steps then lead to the final product. Whilst some operational simplicity is lost, such react ...
Full-Text PDF
... for epoxidation reactions is well illustrated by some past reviews on the matter. In particular, iron-porphyrins have been the subject of extensive reviews, due to their biological relevance as part of cytochrome P450 [14,15], with their use as catalysts in epoxidation reactions being highlighted on ...
... for epoxidation reactions is well illustrated by some past reviews on the matter. In particular, iron-porphyrins have been the subject of extensive reviews, due to their biological relevance as part of cytochrome P450 [14,15], with their use as catalysts in epoxidation reactions being highlighted on ...
Boron Reagents in Process Chemistry: Excellent
... is prepared via reaction of borane with cis,cis-1,5-cyclooctadiene.5 In contrast to borane complexes, which give mixtures of Markovnikov and anti-Markovnikov products (up to 93% favoring the anti-Markovnikov adduct), dialkylboranes are the reagents of choice where high regioselectivity in the additi ...
... is prepared via reaction of borane with cis,cis-1,5-cyclooctadiene.5 In contrast to borane complexes, which give mixtures of Markovnikov and anti-Markovnikov products (up to 93% favoring the anti-Markovnikov adduct), dialkylboranes are the reagents of choice where high regioselectivity in the additi ...
coordination of some monodentate and hybrid multident ate
... phosphorus bases should bind more strongly to “soft” Lewis acids, such as transitionmetal atoms in low oxidation states and, therefore, it is not surprising that low-valent late transition-metal phosphine complexes are well established and highly stable. ...
... phosphorus bases should bind more strongly to “soft” Lewis acids, such as transitionmetal atoms in low oxidation states and, therefore, it is not surprising that low-valent late transition-metal phosphine complexes are well established and highly stable. ...
Diastereoselective Allylation of Carbonyl Compounds and Imines:
... generally proposed that aldehydes locate the H (R2 = H) in the axial position, while aldimines with E-configuration place the H (R2 = H) in the equatorial position (Scheme 1),8 consequently, opposite relative configurations (anti/syn) are generally observed in the reaction of aldehydes and aldimines w ...
... generally proposed that aldehydes locate the H (R2 = H) in the axial position, while aldimines with E-configuration place the H (R2 = H) in the equatorial position (Scheme 1),8 consequently, opposite relative configurations (anti/syn) are generally observed in the reaction of aldehydes and aldimines w ...
Heterogeneous Catalysis and Solid Catalysts
... reduction of NOx in stack gases with NH3 on V2O5 – TiO2 catalysts and the removal of NOx, CO, and hydrocarbons from automobile exhaust gases by using the so-called three-way catalyst consisting of Rh – Pt – CeO2 – Al2O3 deposited on ceramic honeycombs. The term green catalytic processes has been use ...
... reduction of NOx in stack gases with NH3 on V2O5 – TiO2 catalysts and the removal of NOx, CO, and hydrocarbons from automobile exhaust gases by using the so-called three-way catalyst consisting of Rh – Pt – CeO2 – Al2O3 deposited on ceramic honeycombs. The term green catalytic processes has been use ...
Chapter 4 Metal nanoparticles stabilized by chiral ligands with carbohydrate backbone
... molecular species. Diphosphite chiral ligands were also used as stabilisers of palladium nanoparticles.[79] These palladium nanoparticles were active in the ...
... molecular species. Diphosphite chiral ligands were also used as stabilisers of palladium nanoparticles.[79] These palladium nanoparticles were active in the ...
Asymmetric hydrogenation
Asymmetric hydrogenation is a chemical reaction that adds two atoms of hydrogen preferentially to one of two faces of an unsaturated substrate molecule, such as an alkene or ketone. The selectivity derives from the manner that the substrate binds to the chiral catalysts. In jargon, this binding transmits spatial information (what chemists refer to as chirality) from the catalyst to the target, favoring the product as a single enantiomer. This enzyme-like selectivity is particularly applied to bioactive products such as pharmaceutical agents and agrochemicals.