Nucleophilic ring opening of aziridines
... considerable attention in asymmetric synthesis of these amines. One representative procedure is outlined in Scheme 1 using N-tosyl aziridines 1 derived from optically active amino acids as effective templates to undergo nucleophilic ring opening by aryl and heteroaryl Grignard reagents.19 The reacti ...
... considerable attention in asymmetric synthesis of these amines. One representative procedure is outlined in Scheme 1 using N-tosyl aziridines 1 derived from optically active amino acids as effective templates to undergo nucleophilic ring opening by aryl and heteroaryl Grignard reagents.19 The reacti ...
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... in his early work, to test the theory. Studies of aliphatic substitutions and eliminations, often with his long-time collaborator E. D. Hughes, led to I ncorporation into the standard language of chemistry of such words as nucleophile, electrophile, inductive and mesomeric (resonance) effects, and s ...
... in his early work, to test the theory. Studies of aliphatic substitutions and eliminations, often with his long-time collaborator E. D. Hughes, led to I ncorporation into the standard language of chemistry of such words as nucleophile, electrophile, inductive and mesomeric (resonance) effects, and s ...
(omit), and Epoxides
... • Although cyclic ethers have IUPAC names, their common names are more widely used. – IUPAC: prefix ox- shows oxygen in the ring. – The suffixes -irane, irane -etane, etane -olane, olane and -ane show three, four, five, and six atoms in a saturated ring. ...
... • Although cyclic ethers have IUPAC names, their common names are more widely used. – IUPAC: prefix ox- shows oxygen in the ring. – The suffixes -irane, irane -etane, etane -olane, olane and -ane show three, four, five, and six atoms in a saturated ring. ...
The Application of Hydrolytic Enzymes for Biotransformations of
... anti-cancer properties. Lipases have been used effectively in the production of flavonoid ester derivatives that have shown both increased antioxidant and antimicrobial activity. Enzymatic esterifications of flavonoids are performed in organic solvents that increase substrate solubility of complex o ...
... anti-cancer properties. Lipases have been used effectively in the production of flavonoid ester derivatives that have shown both increased antioxidant and antimicrobial activity. Enzymatic esterifications of flavonoids are performed in organic solvents that increase substrate solubility of complex o ...
- Boreskov Institute of Catalysis
... Institute of Catalysis in the main fields of its academic and R&D activities covers the year 2009 and follows the scheme which has been accepted for such kinds of reviews many years ago. The Boreskov Institute of Catalysis, or BIC, is well known to experts in both academic and industrial catalysis n ...
... Institute of Catalysis in the main fields of its academic and R&D activities covers the year 2009 and follows the scheme which has been accepted for such kinds of reviews many years ago. The Boreskov Institute of Catalysis, or BIC, is well known to experts in both academic and industrial catalysis n ...
Ethers, Epoxides and Sulfides
... ¾ Ether cannot form hydrogen bond with another ether molecule. ¾ Its lone pair electron can form a hydrogen bond with hydrogen bond donor with O-H or N-H. ...
... ¾ Ether cannot form hydrogen bond with another ether molecule. ¾ Its lone pair electron can form a hydrogen bond with hydrogen bond donor with O-H or N-H. ...
The polydentate ligands include polyaminopolycarbonic acids, such
... equilibrium of the complexation processes, providing metal-ligand homeostasis. In addition, complex compounds are used in chemical analysis to detect and separate elements, for the dissolution of the precipitates, as quantitative method of the cation determination (complexometry). This systems have ...
... equilibrium of the complexation processes, providing metal-ligand homeostasis. In addition, complex compounds are used in chemical analysis to detect and separate elements, for the dissolution of the precipitates, as quantitative method of the cation determination (complexometry). This systems have ...
direct synthesis of hydrogen peroxide from oxygen and hydrogen
... Figure 2 Chemical principle of the AO process........................................................................... 10 Figure 3 Schematic diagram of the AO process .......................................................................... 11 Figure 4 Flow sheet of a typical AO process for the p ...
... Figure 2 Chemical principle of the AO process........................................................................... 10 Figure 3 Schematic diagram of the AO process .......................................................................... 11 Figure 4 Flow sheet of a typical AO process for the p ...
- University of Bath Opus
... control these compounds to extremely low levels in APIs for patient safety. It follows that any methodology that avoids the need to convert alcohols to halides or sulfonates will offer significant benefits to both industry and synthesis. The equivalent carbonyl compound, on the other hand, is much m ...
... control these compounds to extremely low levels in APIs for patient safety. It follows that any methodology that avoids the need to convert alcohols to halides or sulfonates will offer significant benefits to both industry and synthesis. The equivalent carbonyl compound, on the other hand, is much m ...
New Stereoselective Approaches to Highly Substituted
... Research by Kazmaier, Grandel and Nuber showed that deprotonation of the JV-protected ester o f various amino acids 36 using LDA followed by addition o f a metal salt resulted in the formation of probably a chelated metal enolate 37 (Figure 1.14). Subsequent aldol reactions involving this enolate 37 ...
... Research by Kazmaier, Grandel and Nuber showed that deprotonation of the JV-protected ester o f various amino acids 36 using LDA followed by addition o f a metal salt resulted in the formation of probably a chelated metal enolate 37 (Figure 1.14). Subsequent aldol reactions involving this enolate 37 ...
Chapter 14-15 - Bakersfield College
... • IUPAC name: We replace the -e in alkane name with -ol. • Common name: As simple alcohols using the name of the alkyl group followed by “alcohol”. ...
... • IUPAC name: We replace the -e in alkane name with -ol. • Common name: As simple alcohols using the name of the alkyl group followed by “alcohol”. ...
coordination compounds
... equilibrium of the complexation processes, providing metal-ligand homeostasis. In addition, complex compounds are used in chemical analysis to detect and separate elements, for the dissolution of the precipitates, as quantitative method of the cation determination (complexometry). This systems have ...
... equilibrium of the complexation processes, providing metal-ligand homeostasis. In addition, complex compounds are used in chemical analysis to detect and separate elements, for the dissolution of the precipitates, as quantitative method of the cation determination (complexometry). This systems have ...
Synthesis of Inorganic Nanostructures in Reverse Micelles
... micelles, more and more droplets could contain products and reactants simultaneously. The reaction inside nanodroplets can be catalyzed by the surface of an existing product particle, and a large particle has a greater probability of acting as a catalyst owing to its large surface. Therefore, if the ...
... micelles, more and more droplets could contain products and reactants simultaneously. The reaction inside nanodroplets can be catalyzed by the surface of an existing product particle, and a large particle has a greater probability of acting as a catalyst owing to its large surface. Therefore, if the ...
Chapter 17 Amines
... 17.5.4 Reactions of amines with nitrous acid (A) Reactions of primary aliphatic amines with nitrous acid (B) Reactions of primary arylamines with nitrous acid (C) Reactions of secondary amines with nitrous acid (D) Reactions of tertiary amines with nitrous acid 17.5.5 Synthetic transformations of a ...
... 17.5.4 Reactions of amines with nitrous acid (A) Reactions of primary aliphatic amines with nitrous acid (B) Reactions of primary arylamines with nitrous acid (C) Reactions of secondary amines with nitrous acid (D) Reactions of tertiary amines with nitrous acid 17.5.5 Synthetic transformations of a ...
Full-Text PDF
... mechanism [50,65–68], but differently with respect to iron [42,43]. However, here the rhodium center might be disproportionate, or lose one chloride, like Castarlenas et al. have recently demonstrated [53]. For the sake of clarity, the comparison between the neutral Ru and Rh based catalysts in Figu ...
... mechanism [50,65–68], but differently with respect to iron [42,43]. However, here the rhodium center might be disproportionate, or lose one chloride, like Castarlenas et al. have recently demonstrated [53]. For the sake of clarity, the comparison between the neutral Ru and Rh based catalysts in Figu ...
Name_____________________________________ 22 • Organic
... 24. Cubane is the name given to a newly synthesized alkane which has the formula C8H8. This is a three-dimensional carbon-carbon molecule where every carbon atom is bonded to three carbon atoms plus one hydrogen atom. Sketch the structure and explain why it tends to be unstable. Highly strained Bond ...
... 24. Cubane is the name given to a newly synthesized alkane which has the formula C8H8. This is a three-dimensional carbon-carbon molecule where every carbon atom is bonded to three carbon atoms plus one hydrogen atom. Sketch the structure and explain why it tends to be unstable. Highly strained Bond ...
Enantioselective synthesis
Enantioselective synthesis, also called chiral synthesis or asymmetric synthesis, is defined by IUPAC as: a chemical reaction (or reaction sequence) in which one or more new elements of chirality are formed in a substrate molecule and which produces the stereoisomeric (enantiomeric or diastereoisomeric) products in unequal amounts.Put more simply: it is the synthesis of a compound by a method that favors the formation of a specific enantiomer or diastereomer.Enantioselective synthesis is a key process in modern chemistry and is particularly important in the field of pharmaceuticals, as the different enantiomers or diastereomers of a molecule often have different biological activity.