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Longer titles found: Activation of cyclopropanes by transition metals (view)

searching for Cyclopropanes 44 found (259 total)

Johnson–Corey–Chaykovsky reaction (2,189 words) [view diff] exact match in snippet view article find links to article

in organic chemistry for the synthesis of epoxides, aziridines, and cyclopropanes. It was discovered in 1961 by A. William Johnson and developed significantly

Simmons–Smith reaction (2,502 words) [view diff] exact match in snippet view article find links to article

easily cyclopropanated, yielding fluoro-, bromo-, and iodo-substituted cyclopropanes. The cyclopropanation of N-substituted alkenes is made complicated by

Carbene (2,400 words) [view diff] exact match in snippet view article find links to article

primary synthetic utility arises from attacks on π bonds, which give cyclopropanes; and on σ bonds, which cause carbene insertion. Other reactions include

Metal-catalyzed cyclopropanations (1,251 words) [view diff] exact match in snippet view article find links to article

from the vinyl group. Methods for the stereoselective synthesis of cyclopropanes from diazocarbonyl compounds and olefins have relied on either the use

Myers deoxygenation (374 words) [view diff] exact match in snippet view article find links to article

suitably-positioned functional groups within the molecule, such as alkenes or cyclopropanes, leading to alternate products. If the diazene intermediate is able

Cyclohexylmethanol (246 words) [view diff] exact match in snippet view article find links to article

19687120124. Rickborn, Bruce; Wood, Stanley E. (1971). "Cleavage of cyclopropanes by diborane". Journal of the American Chemical Society. 93 (16). American

Hans-Ulrich Reissig (642 words) [view diff] exact match in snippet view article find links to article

Hünig finishing his habilitation in 1984 (Chemistry of Donor-Acceptor Cyclopropanes). As Heisenberg awardee and lecturer he stayed in Würzburg until 1986

Methylcyclopropane (72 words) [view diff] exact match in snippet view article find links to article

monomethyl derivative of cyclopropane. Methylcyclopropane, like many other cyclopropanes, undergoes ring-opening reactions. Bond cleavage in certain reactions

Cope rearrangement (1,087 words) [view diff] exact match in snippet view article find links to article

However, conformationally constrained systems like cis-1,2-divinyl cyclopropanes can undergo the rearrangement in the boat conformation. It is currently

Elias James Corey (5,646 words) [view diff] exact match in snippet view article find links to article

20). The Johnson-Corey-Chaykovsky reaction synthesizes epoxides and cyclopropanes. The reaction forms a sulfur ylide in situ that reacts with enones,

Organic reaction (1,182 words) [view diff] exact match in snippet view article find links to article

Aziridines preparation reactions Carboxylic acids preparation reactions Cyclopropanes preparation reactions Diazo compounds preparation reactions Diols preparation

Dichlorocarbene (778 words) [view diff] exact match in snippet view article find links to article

[1+2]cycloaddition to form geminal dichlorocyclopropanes. These can be reduced to cyclopropanes or hydrolysed to give cyclopropanones by a geminal halide hydrolysis

Sodium bis(trimethylsilyl)amide (450 words) [view diff] exact match in snippet view article

halocarbons. These carbene reagents add to alkenes to give substituted cyclopropanes and cyclopropenes. To deprotonation of phosphonium salts, generating

Cyclopropene (1,007 words) [view diff] exact match in snippet view article find links to article

Meijere, Armin, ed. (1997). Houben-Weyl. Methods of Organic Chemistry – Cyclopropanes, Authors Index, Compound Index. Vol. E 17d. Stuttgart, New York: George

C5H10 (166 words) [view diff] exact match in snippet view article find links to article

alkenes. Cyclopentane (CAS 287-92-3) Methylcyclobutane (CAS 598-61-8) Cyclopropanes Ethylcyclopropane (CAS 1191-96-4) 1,1-Dimethylcyclopropane (CAS 1630-94-0)

Bamford–Stevens reaction (1,481 words) [view diff] exact match in snippet view article find links to article

products seen in the dialkyl case, or other insertion products (i.e. cyclopropanes). See beta-silicon effect. N-tosylhydrazones can be used in a variety

Carbocation (5,038 words) [view diff] exact match in snippet view article find links to article

described as side-protonated alkenes, edge-protonated cyclopropanes, or corner-protonated cyclopropanes rather than true primary cations. Even the simple

Cyclononatetraene (485 words) [view diff] exact match in snippet view article find links to article

4th Edition Supplement: Carbocyclic Three-Membered Ring Compounds, Cyclopropanes: Synthesis. Goettingen: Georg Thieme Verlag. p. 1226. ISBN 978-3131819543

Titanium isopropoxide (654 words) [view diff] exact match in snippet view article find links to article

The compound is also used as a catalyst in the preparation of certain cyclopropanes in the Kulinkovich reaction. Prochiral thioethers are oxidized enantioselectively

Wulff–Dötz reaction (1,502 words) [view diff] exact match in snippet view article find links to article

1016/0022-328X(85)80079-6. Hoye, Thomas R.; Vyvyan, James R. (June 1995). "Polycyclic Cyclopropanes from Reactions of Alkene-Containing Fischer Carbene Complexes and Alkynes:

Diazo (1,433 words) [view diff] exact match in snippet view article find links to article

Intramolecular reactions of diazocarbonyl compounds provide access to cyclopropanes. In the Buchner ring expansion, diazo compounds react with aromatic

Sodium methylsulfinylmethylide (507 words) [view diff] exact match in snippet view article find links to article

"An asymmetric route to enantiomerically pure 1,2,3-trisubstituted cyclopropanes". J. Org. Chem. 57 (23): 6265–6270. doi:10.1021/jo00049a038. Trost,

Nikolai Kischner (500 words) [view diff] exact match in snippet view article find links to article

and developed a versatile method for the preparation of substituted cyclopropanes by thermal decomposition of pyrazolines. This reaction, known as the

Organobismuth chemistry (1,867 words) [view diff] exact match in snippet view article find links to article

catalysis in a similar fashion to afford a variety of aryl and heteroaryl cyclopropanes: The thermal stability of R5M compounds decrease in the order As > Sb

Carbometalation (1,689 words) [view diff] exact match in snippet view article find links to article

Carbometalation of Cinnamyl Derivatives: New Access to Chiral Disubstituted Cyclopropanes— Configurational Stability of Benzylic Organozinc Halides". Chemistry

Organogold chemistry (3,036 words) [view diff] exact match in snippet view article find links to article

; Parr, W. J. E.; Thomas, C. B. (1976). "The reactions of alkynes, cyclopropanes, and benzene derivatives with gold(III)". Journal of the Chemical Society

Pauson–Khand reaction (2,913 words) [view diff] exact match in snippet view article find links to article

Ammonium Ylides in Basic Two-Phase Systems: Convenient Synthesis of Cyclopropanes, Oxiranes and Alkenes Substituted with Electron-Withdrawing Groups"

Cyclodecapentaene (1,060 words) [view diff] exact match in snippet view article find links to article

other method is to further remove hydrogens and develop triple bonds or cyclopropanes along the ring. Thus computational studies suggest that cyclodecatetraeneyne

Schwartz's reagent (1,662 words) [view diff] exact match in snippet view article find links to article

(phenyl group donor) Gandon, Vincent (2002). "A one-pot access to cyclopropanes from allylic ethers via hydrozirconation–deoxygenative ring formation"

Conjugated system (4,287 words) [view diff] exact match in snippet view article find links to article

cyclopropane ring, evidence for transmission of "conjugation" through cyclopropanes has also been obtained. Two appropriately aligned π systems whose ends

Carbanion (3,430 words) [view diff] exact match in snippet view article find links to article

83 (4): 862–865. doi:10.1021/ja01465a030. Walborsky, H. M. (1964). "Cyclopropanes. XV. The Optical Stability of 1-Methyl-2,2-diphenylcyclopropyllithium"

Alkene (5,110 words) [view diff] exact match in snippet view article find links to article

Epoxidation epoxide electrophilic addition of a peroxide Cyclopropanation cyclopropanes addition of carbenes or carbenoids Hydroacylation ketones oxidative

Allenes (4,081 words) [view diff] exact match in snippet view article find links to article

ISSN 0009-2665. PMID 21314182. Sydnes, Leiv K. (2003-04-01). "Allenes from Cyclopropanes and Their Use in Organic SynthesisRecent Developments". Chemical Reviews

Nickel boride catalyst (1,533 words) [view diff] exact match in snippet view article find links to article

under forcing conditions. It leaves epoxides unaffected, but affects cyclopropanes occasionally. Most esters are stable to Ni2B, except for benzylic, allylic

Wolff rearrangement (4,578 words) [view diff] exact match in snippet view article find links to article

exist a handful of examples of ring contractions from cyclobutanones to cyclopropanes. The Wolff rearrangement is capable of contracting cyclohexanones to

Organozinc chemistry (3,394 words) [view diff] exact match in snippet view article find links to article

is the Blaise reaction. The Simmons–Smith reagent is used to prepare cyclopropanes from olefin using methylene iodide as the methylene source. The reaction

Janis Louie (1,366 words) [view diff] exact match in snippet view article find links to article

Carrying Gem-Diallyl Substituents Obtained via Ring Opening of (Halomethyl)cyclopropanes with Allyltributyltin." ChemInform 34.34 (2003): n. pag. Web.[3] Louie

Desulfonylation reactions (2,248 words) [view diff] exact match in snippet view article find links to article

Synthesis of (1S,2R)- and (1R,2R)-2-Aminomethyl-1-(1H-imidazol-4-yl)cyclopropanes and Their Enantiomers as Conformationally Restricted Analogues of Histamine"

Phosphetane (5,154 words) [view diff] exact match in snippet view article find links to article

below: Another way to make phosphetanes comes from the ring-expansion of cyclopropanes, in which it seems a phosphine is directly inserted into a C-C bond

Akkattu T. Biju (552 words) [view diff] exact match in snippet view article find links to article

research areas of Aryne chemistry, asymmetric catalysis, donor-acceptor cyclopropanes and N-heterocyclic carbene organocatalysis. The awards and honors conferred

Empowering Women in Organic Chemistry (1,472 words) [view diff] exact match in snippet view article find links to article

Polymers Shanina Sanders Johnson Spelman College Teaching, Mentoring, & Cyclopropanes: Reflections from a Chemist’s Journey Sarah Reisman Caltech Making Molecules:

Igor V. Komarov (2,278 words) [view diff] exact match in snippet view article find links to article

V.; Mykhailiuk, Pavel K. (2011-02-04). "Trifluoromethyl-substituted cyclopropanes". Tetrahedron. 67 (5): 803–823. doi:10.1016/j.tet.2010.11.068. Chernykh

Serotonin–norepinephrine–dopamine reuptake inhibitor (15,216 words) [view diff] exact match in snippet view article find links to article

Tschaen, David (2006). "Stereocontrolled Synthesis of Trisubstituted Cyclopropanes: Expedient, Atom-Economical, Asymmetric Syntheses of (+)-Bicifadine

List of gases (4,456 words) [view diff] exact match in snippet view article find links to article

A. M. (June 1956). "Synthetic Studies in the Field of Fluorinated Cyclopropanes". Journal of the American Chemical Society. 78 (12): 2801–2804. doi:10