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Asymmetric Alkylations

CHIRAL CATALYST-INDUCED ALDEHYDE ALKYLATION ASYMMETRIC NUCLEOPHILIC ADDITION... [Pg.107]

Chiral Catalyst-Induced Aldehyde Alkylation Asymmetric... [Pg.513]

Ci-TunePhos-modified Pd catalysts have found applications in allylic asymmetric alkylations, asymmetric hydrogenations of a- and /3-ketoesters <2006SL1169, 2000JOC6223>, allylphthalimides <2005AGE4933>, enol acetates <2002OL4495>, and asymmetric cycloadditions <2005TL8213>. [Pg.362]

Keywords Phase transfer. Chiral ligand. Chiral base, Allylic alkylation. Cinchonine, Enolate alkylation. Asymmetric deprotonation. Asymmetric arylation. Radical alkylation... [Pg.1201]

Nemoto and Hamada [50] has described the development of a new class of chiral phosphorus ligand - aspartic acid-derived P-chirogenic diaminophosphine oxides, DIAPHOXs - and their application to several Pd-catalyzed asymmetric allylic substitution reactions. Pd-catalyzed asymmetric allylic alkylation was initially examined in detail using diaminophosphine oxides 77, resulting in the highly enantioselective construction of quaternary stereocenters. With the use of the Pd-DIAPHOX catalyst system, asymmetric allylic alkylation, asymmetric allylic amination, and enantioselective construction of quaternary carbons were achieved with high ee (up to 97-99% in many cases) (Scheme 24). [Pg.179]

One-carbon Homologations. SEM-Cl can be used as a formaldehyde equivalent, which upon alkylation affords, directly, a protected hydroxyl. SEM-Cl does not suffer from some of the handling liabilities of formaldehyde (e.g., the need for cracking or the use of aqueous solutions) and as such has shown specific promise in the area of asymmetric alkylations. Asymmetric alkylations of enolates have been accomplished via the employment of chiral auxiliaries including oxazolidinones (eq 26) and RAMP/SAMP hydrazones. Furthermore, Schultz and co-workers have utilized SEM-Cl to trap chiral enolates derived from Birch reductions (eq 27). ... [Pg.631]

Keywords Allylic alkylation Asymmetric catalysis Decarboxylation Enolate a-alkylation Palladium catalysis PHOX ligands Quaternary stereocenters... [Pg.281]


See other pages where Asymmetric Alkylations is mentioned: [Pg.76]    [Pg.241]    [Pg.242]    [Pg.492]    [Pg.298]   


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Aldehydes, asymmetric alkylation

Aldehydes, asymmetric alkylation dialkylzinc reagents

Alkyl asymmetric reductions

Alkyl asymmetric synthesis

Alkyl carbamates asymmetric deprotonation

Alkyl halides asymmetric syntheses

Alkyl lithium, asymmetric addition

Alkylation asymmetric

Alkylation asymmetric induction

Alkylation asymmetric intramolecular

Alkylation asymmetric phase-transfer

Alkylations asymmetric, chiral phase-transfer

Alkylations, asymmetric ammonium salt

Alkylations, asymmetric antofine

Alkylations, asymmetric ester

Allylic alkylation asymmetric

Allylic alkylations asymmetric

Allyllic alkylation, asymmetric

Amino acid derivatives asymmetric alkylation

Aryl alkyl sulfides, asymmetric oxidation

Asymmetric Alkylation of Stabilized Carbanion

Asymmetric Alkylation or Amination of Allylic Esters

Asymmetric Allylic Amination and Alkylation

Asymmetric Birch reductive alkylation

Asymmetric Enolate Alkylations Using Chiral Auxiliaries

Asymmetric Friedel-Crafts alkylation reactions Michael addition

Asymmetric Friedel-Crafts alkylation reactions amination

Asymmetric Propargylic Alkylation with Acetone

Asymmetric a-alkylation

Asymmetric a-alkylation aldehydes and ketones

Asymmetric a-alkylation reactions

Asymmetric alkyl methyl sulfides

Asymmetric alkylation Schiff base

Asymmetric alkylation enolates

Asymmetric alkylation of aldehydes

Asymmetric alkylation of imines

Asymmetric alkylation of ketones

Asymmetric alkylation of methylmalonic acid

Asymmetric alkylation using polymers

Asymmetric alkylation, enolate

Asymmetric alkylations via chiral

Asymmetric allylic alkylations -1,3-diphenylprop-2-enyl acetate

Asymmetric allylic alkylations Tsuji-Trost

Asymmetric allylic alkylations di-//-chloropalladium

Asymmetric allylic alkylations di-/z-chloropalladium

Asymmetric aryl alkyl sulfide

Asymmetric enolate Myers’ alkylation

Asymmetric enolate alkylations

Asymmetric phase-transfer catalysis alkylation

Asymmetric reactions Tsuji-Trost reaction, allylic alkylation

Asymmetric reactions alkylation

Asymmetric reactions alkylation, catalytic

Asymmetric synthesis alkylation

Asymmetric synthesis allylic alkylation

Carbonyl compounds, asymmetric alkylation

Case Study Asymmetric Alkylation of Benzaldehyde

Catalytic asymmetric alkylation

Catalytic asymmetric alkylation of imines

Catalytic asymmetric allylic alkylation

Catalytic asymmetric cross-coupling reactions with secondary alkyl halides

Catalytic asymmetric phase-transfer alkylation

Chiral auxiliaries asymmetric alkylations

Chiral phase-transfer catalysis asymmetric alkylations

Cyclic acetates, asymmetric allylic alkylations

Diphenylallyl acetate, asymmetric allylic alkylation

Evans asymmetric alkylation

Evans’ oxazolidinones Asymmetric alkylation with

Friedel-Crafts alkylation, asymmetric

Friedel-Crafts reaction asymmetric alkylation

Furan asymmetric alkylation

Glycine asymmetric alkylation

Glycolate, asymmetric alkylation

Hetero-allylic asymmetric alkylation

Imines asymmetric alkylation

Indanones, asymmetric alkylation

Intermolecular catalytic asymmetric alkylations

Intramolecular asymmetric allylic alkylation

Intramolecular reactions asymmetric alkylation

Iridium-Catalyzed Asymmetric Allylic Alkylation

Ketones, asymmetric alkylation

Ketones, asymmetric alkylation condensation

Mechanistic investigations, asymmetric alkylation

Merging Asymmetric Metal and Organocatalysis in Friedel-Crafts Alkylations

Metallated chiral asymmetric alkylation

Myers asymmetric alkylation

Organo-SOMO-Catalyzed Asymmetric Alkylations of Arenes

Oxazinones, asymmetric alkylation reaction

Palladium-catalyzed asymmetric allylic alkylations

Pd-catalyzed asymmetric allylic alkylation

Phenylalanine derivatives, asymmetric alkylation

Substituted benzyl bromides asymmetric alkylation

Tsuji-Trost reaction, asymmetric allylic alkylation

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