Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Enolate chiral

When chiral enolates are allowed to react with W-fluoro-2,4,6-trimethyl-pyridinium triflate (K, Table 3b), moderate diastereomeric excesses are achieved [79] (equation 44)... [Pg.157]

Tab. 3.4 Cyclopropanation of the chiral enol ether 89 under Simmons-Smith conditions... Tab. 3.4 Cyclopropanation of the chiral enol ether 89 under Simmons-Smith conditions...
Tab. 3.5 Cyclopropanation of the chiral enol ethers 92-95 under Furukawa conditions... Tab. 3.5 Cyclopropanation of the chiral enol ethers 92-95 under Furukawa conditions...
Asymmetric Michael addition of chiral enolates to nltroalkenes provides a useful method for the preparation of biologically important compotmds. The Michael addition of doubly deprotonated, optically active fi-hydroxycarboxylates to nltroalkenes proceeds v/ith high dias-tereoselecdvity to give fityr/iro-hydroxynitroesters fEq, 4,58, ... [Pg.90]

Chiral enolates of 1,3-dioxalan-4-ones, methyl l,3-oxa2ohdine-4-carboxylates,and 1,3-iml-da2ohdine-4-ones derived from chiral natural sources such as fS -prohne, fS -serine, and fS -threonine are added to nltroalkenes in high diastereoselectivity fScheme 4,12, ... [Pg.90]

Volume E 21 D.1.3.4.2. Addition of Chiral Enolates to Achiral Carbonyl Compounds... [Pg.463]

I.3.4.2.5. Chiral Enolates of Acyl-Metal Complexes J. S. McCallum and L. S. Liebeskind I.3.4.2.5.I. Chiral Iron-Acyl Complexes... [Pg.517]

Extension of this aldol reactivity to the preparation of chiral materials via condensation reactions of the chiral enolate species 2 and 3 is discussed in the following sections. [Pg.517]

Aldol reactions of a-substituted iron-acetyl enolates such as 1 generate a stcrcogenic center at the a-carbon, which engenders the possibility of two diastereomeric aldol adducts 2 and 3 on reaction with symmetrical ketones, and the possibility of four diastereomeric aldol adducts 4, 5, 6, and 7 on reaction with aldehydes or unsymmetrical ketones. The following sections describe the asymmetric aldol reactions of chiral enolate species such as 1. [Pg.540]


See other pages where Enolate chiral is mentioned: [Pg.76]    [Pg.299]    [Pg.115]    [Pg.499]    [Pg.613]    [Pg.453]    [Pg.454]   
See also in sourсe #XX -- [ Pg.26 ]

See also in sourсe #XX -- [ Pg.9 ]




SEARCH



Acetate enolate equivalents, chiral

Acetate enolate synthon, chiral

Acetate enolates chiral

Addition of Chiral Enolates to Achiral Carbonyl Compounds

Additions of Chiral Imide Enolates to Michael Acceptors

Aggregates, chiral lithium amide/enolate

Aldehydes, chiral condensation with achiral enolates

Aldol Reactions of Chiral Imides and Ester Enolates

Aldol condensation chiral boron enolate

Aldol reaction chiral enolates

Aldol reaction using chiral enolates

Alkylation of Chiral Imide Enolates

Alkylation of chiral enolates

Alkylation, enolate ions chirality

Aluminum enolates from chiral acyl-iron complexes

Amides: chiral enolates

Amination of Chiral Imide Enolates

Asymmetric Enolate Alkylations Using Chiral Auxiliaries

Asymmetric aldol reactions using chiral boron enolates

Asymmetric enolate with oxazolidinone chiral

Auxiliaries, chiral ester enolates

Axially chiral enolate

Boron enolates chiral

Carboxylic acids, syn-a-methyl-p-hydroxyaldol reaction titanium enolates, chiral auxiliary

Carboxylic acids, syn-a-methyl-p-hydroxyaldol reaction zirconium enolates, chiral auxiliary

Chiral ammonium ketene enolates reaction

Chiral auxiliaries lithium enolate aldol reaction

Chiral enol ester

Chiral enol ethers

Chiral enol ethers C-N bond formation

Chiral enol ethers asymmetric

Chiral enolate addition

Chiral enolate nucleophile

Chiral enolates aldol stereoselection

Chiral enolates alkylation

Chiral enolates, Michael additions

Chiral imine acetal with lithium enolate

Chiral ketene enolates

Chiral lithium enolates

Chiral lithium enolates aldol reaction diastereoselectivity

Chiral magnesium enolates

Chirality alkylation of enolates

Diastereoselective alkylation of chiral enolates

Diastereoselective synthesis aldol reactions, chiral enolates

Dienophiles ethers, chiral enol

Enol borinate, chiral

Enol silanes reaction with chiral a-alkoxy aldehydes

Enol silanes reaction with chiral a-methyl aldehydes

Enol silanes reaction with chiral acetals

Enol silanes reaction with chiral azetinones

Enol silanes, stereogenic reaction with chiral azetinones

Enolate amide, chiral

Enolate chiral auxiliary

Enolate ester, chiral

Enolates chiral

Enolates chiral

Enolates chiral, conformation

Enolates chiral, diastereoselective alkylation

Enolates, aluminum chiral

Esters chiral (3-amino thiol enolates

Esters, 2-hydroxy chiral titanium enolates

Glycine enolate equivalents, chiral

Hydrazone enolates, chiral

Imide enolates, chiral

Imine enolates, chiral

Ketones chiral enolates

Ketones, ethyl titanium enolate, chiral auxiliary

Lanthanide enolates chiral

Menthyl acetate chiral enolates

Metal enolates chirality transfer

Nucleophilic attack chiral enolate

Oxazoline enolates, chiral

Reactions of Chiral Ammonium Ketene Enolates as Nucleophiles with Different Electrophiles

Reversibility chiral enolates

Silyl enol ethers Lithium amides, chiral

Silyl enol ethers chiral

Stereoinduction from chiral ligands on the enolate metal

Stereoselectivity chiral enolates

Tin enolates chiral auxiliary

Use of Trichlorosilyl Enolates and Chiral Lewis Bases

© 2024 chempedia.info