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1 2-metalate rearrangement

aldol condensation

aliphatic alcohol

allyl beta-ketoester

allyl carbamothioate

allylic alcohol

allylic alkylation

allylic etherification

allylic nucleophile

alpha-amido aldehyde

alpha-arylation

alpha-halo carbonyl

alpha-haloacrylates

alpha-propargylic conjugated system

arene functionalization

aryl alkynyl ketone

aryl allyl ether

aryl tosyl-mesylate

arylative alkylation

asymmetric deprotonation

azodicarboxylate

azomethine imine

azomethine ylide

baeyer-villiger

benzoin cyclization

benzoin hydroacylation

benzylic halide

bis(pinacolato)dibor- on

brook rearrangement

carbometalation

carboxylic acid

chelation stereocontrol

chiral auxiliary

chiral bronsted acid

cinchona alkaloid

claisen rearrangement

click chemistry

conjugated system

Cope rearrangement

Cross-Metathesis

cyclohexadienone

cycloisomerization

cyclopropanation

decarbonylation

Decarboxylation

dehydrogenation

dialkylidene ketone

dihydropyranone

dihydropyrazole

dihydropyridine

dipolar cycloaddition

directing group

electrocyclic reaction

electrophilic conj. system

enantioselective protonation

friedel-crafts alkylation

Fries rearrangement

gamma-keto acid

heterocycle functionalization

homoallylic amine

homoallylic nitrone

hydroformylation

hydrostannylation

Ireland-Claisen Rearrangement

Lewis base catalysis

macrolactamization

Martin sulfurane

metal carbenoid

meyer-schuster rearrangement

Michael addition

morita-baylis-hillma- n

multi-carbocycle

multi-component reaction

N-acyl dehydroamino ester

N-allylhydrazone

N-tert-butanesulfiny- l

Nazarov cyclization

O-alkyl carbamate

oxidative annulation

oxidative cyclization

Petasis Reaction

phase-transfer catalyst

phosphinooxazoline

Phosphoric acid

phosphorodiamidate

Phosphorylation

pictet-spengler

polar dipolarophilic cyclization

primary alcohol

prins cyclization

propargylic alcohol

proton transfer catalysis

pyridine-N-oxide

pyridinium ylide

radical cyclization

reductive aldol

retro brook rearragement

retro-allylation

reversed reactivity

ring-closing metathesis

silacyclopropane

silylene transfer reaction

Sommelet-Hauser rearrangement

sulfonylimidate

tandem transformation

tetrahydropyran

Tishchenko hydroacylation

trifluoroborate

[2 3] sigmatropic rearrangement

[3 2] annulation

[3 4] annulation

[33] sigmatropic rearrangement

[4 2] annulation

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Pyridine-N-Oxide as a Mild Reoxidant Which Transforms Osmium-Catalyzed Oxidative Cyclization

Timothy J. Donohoe et al.

Angewandte Chemie International Edition 47 (15), 2872-5 (2008)

info:doi/10.1002/anie.200705425

PNO reoxidizes osmium to osmium VI, which catalyzes oxidative cyclization of beta-amino alcohol to the tethered olefin to form pyrrolidine.

Posted by jsuh to oxidative cyclization alkene pyrrolidine amino alcohol osmium pyridine-N-oxide oxidation on Wed Mar 26 2008 at 18:40 UTC | info | related

Cycloadditions of N-Sulfonyl Nitrones Generated by Lewis Acid Catalyzed Rearrangement of Oxaziridines

Katherine Partridge, Mary Anzovino, and Tehshik Yoon

Journal of the American Chemical Society 130 (10), 2920-1 (15 Feb 2008)

info:doi/10.1021/ja711335d

Titanium catalyzed rearrangement of N-nosyl oxaziridine to generate nitrone intermediate, which undergoes [3+2] cycloaddition with styrene to afford isoxazolidine in good diasteroselectivity. The nosyl group can be easily removed without the concomitant cleavage of the isoxazolidine N-O bond.

Posted by jsuh to amino alcohol Cycloaddition alkene styrene isoxazolidine oxaziridine nitrone titanium on Thu Mar 20 2008 at 00:13 UTC | info | related

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