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	Heck reaction - Wikipedia, the free encyclopedia
		The reaction is performed in the presence of an organopalladium catalyst.
		This coupling reaction is stereoselective with a propensity for trans coupling as the palladium halide group and the bulky organic residue move away from each other in the reaction sequence in a rotation step.
		In the presence of an ionic liquid a Heck reaction proceeds in absence of a phosphorus ligand.
	en.wikipedia.org /wiki/Heck_reaction (748 words)

	American Chemical Society honors UD prof (Site not responding. Last check: 2007-10-25)
		Richard F. Heck, University of Delaware professor emeritus of chemistry and biochemistry and the namesake of chemistry's “Heck reaction,” is the recipient of the American Chemical Society's Herbert C. Brown Award for Creative Research in Synthetic Methods.
		Heck's organometallic chemistry research laid the groundwork for processes used in modern organic synthesis.
		Heck conceived and reduced to practice the idea of using a catalytic amount of a transition-metal complex to form a carbon-carbon bond.
	www.udel.edu /PR/NewsReleases/2006/sep/9-12-05/heck.html (227 words)

	Reaction mechansms
		The Heck reaction was discovered in the late sixties and since then it has developped in one of the most important reactions in organic synthesis.
		We have applied this methodology to the study of the Heck reaction with classic catalysts, and to other processes of crucial importance in Pd-mediated reactions: Olefin insertion, Pd-migration along carbon chains, cyclization, etc. Reaction intermediates have been isolated and their evolution studied.
		New C-C coupling reactions are being studied in our group that could be eventually developed and applied in organic synthesis such as the migratory insertion of aryl and carbene groups in the coordination sphere of palladium as shown in scheme 2.
	www3.uva.es /ocandhc/pages_folder/CHQFP_en3.html (652 words)

	9-methoxystrobilurin K
		The synthesis was centralized around a Heck reaction, which is the coupling of an organic bromide and an alkene with the use of a palladium catalyst.
		The first major reaction in the synthesis of 9-methoxystrobilurin K produced an optically active chiral epoxy phenol which was the analogue to the desired 7-bromo-1,5-benzodioxepin-3-ol.
		chose to use the Sharpless asymmetric epoxidation reaction to form the desired chiral epoxy because of the reaction's high yield.
	www.stolaf.edu /people/hansonr/chem247/sharpless/methoxystrob.htm (329 words)

	The KKH Research Group Homepage
		In this project, we investigated the use of several transition-metal catalysed reactions for the construction of medium-sized (7- to 10-membered) benzofused heterocyclic rings.
		Finally, an intramolecular palladium-catalysed aryl amidation reaction was used for the ring cyclisation step, and a number of 2-alkyl and 2-aryl benzazepine rings may be constructed in this way.
		The Heck cyclisation of medium-sized rings is found to be highly sensitive to the catalytic conditions.
	www.ch.ic.ac.uk /mimi/heterocycles.htm (529 words)

	Heck Reaction
		The palladium-catalyzed C-C coupling between aryl halides or vinyl halides and activated alkenes in the presence of a base is referred as the "Heck Reaction".
		Recent developments in the catalysts and reaction conditions have resulted in a much broader range of donors and acceptors being amenable to the Heck Reaction.
		The Heck Reaction of Electron-Rich Olefins with Regiocontrol by Hydrogen-Bond Donors
	www.organic-chemistry.org /namedreactions/heck-reaction.shtm (198 words)

	JCE 2000 (77) 757 [Jun] The Heck Reaction: A Microscale Synthesis Using a Palladium Catalyst
		JCE 2000 (77) 757 [Jun] The Heck Reaction: A Microscale Synthesis Using a Palladium Catalyst
		Heck reactions use palladium acetate as the preferred precatalyst to effect vinylic substitutions involving haloarenes and haloalkenes.
		The microscale synthesis described uses a reaction between a bromoiodobenzene and acrylic acid to produce a bromocinnamic acid.
	jchemed.chem.wisc.edu:8000 /journal/Issues/2000/Jun/abs757.html (248 words)

	Bhalchandra Bhanage
		Heck reactions using water soluble metal complexes in supercritical carbon dioxide, B.M. Bhanage, Y. Ikushima, M. Shirai and M. Arai, Tetrahedron letters, 40, 6427-6430, (1999).
		Heck reactions in supercritical carbon dioxide using organometallic complex catalysts, B.M. Bhanage, Y. Ikushima, M. Shirai and M. Arai, High Pressure Research, in press, (2000).
		A Kinetic study of Heck reaction of iodobenzene and methyl acrylate using homogeneous Pd/TPP catalyst, F. –G. Zhao, B.M. Bhanage, M. Shirai and M. Arai, International symposium on “Reaction* Kinetic and the development of catalytic processes” held at Brudge, Belgium, April 99.
	members.tripod.com /~bhanageb (1273 words)

	Chemical Literature Course, Lecture 13b
		Basic structure drawing for reaction searching is carried out in the same way as for substance searching (see previous lecture.) There are a few additional tools for the added specificity available for reaction searching.
		The Reaction Mapping Tool is used to specify that the nitrogen in the nitro group in the reactant becomes the nitrogen in the amine group in the product.
		Note that not all reaction records have yield information, so you might want to use the "include reactions that do not have yield information option", so as not to exclude useful possibilities.
	www.library.ucsb.edu /classes/chem184/184leco.html (1408 words)

	Aryl Halide Chemistry
		These methods take the complex path of reactions necessary to form a desired molecule and either make these reactions proceed faster, cheaper, at lower temperatures—necessary, for instance, for the relatively fragile molecules of pharmaceuticals—or with less toxic materials.
		The top 20 list is dominated by reports of new efficient catalysts—the hottest paper in the field, for instance, by Hermann et al, describes catalysts known as palladacycles that allow for bond formation with low levels of palladium.
		The older papers in the top 20 describe the three now-proven methods for the formation of the bonds themselves, while the newer papers describe catalysts and techniques that facilitate the reactions using those methods.
	www.esi-topics.com /aryl/index.html (387 words)

	Heck Reaction Catalyzed by Pd-Modified Zeolites (Site not responding. Last check: 2007-10-25)
		The catalysts can easily be separated from the reaction mixture and reused after washing without loss in activity.
		The electronic nature of the aryl bromides and the olefins has a dominating effect on the reaction yield and selectivity.
		Product form selectivity is observed in the Heck reaction with cyclic olefins.
	pubs.acs.org /cgi-bin/abstract.cgi/jacsat/2001/123/i25/abs/ja001087r.html (165 words)

	Acetic acid - Wikipedia, the free encyclopedia
		This reaction sequence consisted of chlorination of carbon disulfide to carbon tetrachloride, followed by pyrolysis to tetrachloroethylene and aqueous chlorination to trichloroacetic acid, and concluded with electrolytic reduction to acetic acid.
		Acetic acid undergoes the typical chemical reactions of a carboxylic acid, notably the formation of ethanol by reduction, and formation of derivatives such as acetyl chloride via nucleophilic acyl substitution.
		A colour reaction for salts of acetic acid is iron(III) chloride solution, which results in a deeply red colour that disappears after acidification.
	en.wikipedia.org /wiki/Acetic_acid (3609 words)

	Most Requested Documents 2Q 2002 - Chemistry and Related Science - CAS Science Spotlight (Site not responding. Last check: 2007-10-25)
		(165.degree.) 3 is an active and robust catalyst in the Heck reaction.
		Time dependence, reuse, and Heck reaction conditions are discussed for 3.
		an analogous C,N-bidentate ligand, is compared to 3 in terms of stability, catalytic activity, and reaction profile in the Heck reaction.
	www.cas.org /spotlight/rlist2q02/200207j7.html (277 words)

	TxSpace at Texas A&M University Libraries: Item 1969.1/1130 (Site not responding. Last check: 2007-10-25)
		The mechanism of carbon coupling reactions is traditionally represented in a very broad schematic.
		The Heck reaction has become a powerful tool in synthetic labs but the mechanism of this reaction has remained a topic of debate since the reaction's discovery.
		The catalytic cycle that has come to be accepted, while accurate in its own right, is not nearly as detailed as the complexity of the various stages of the Heck reaction suggest it should be.
	txspace.tamu.edu /handle/1969.1/1130 (252 words)

	4 Palladium
		Transition metal mediated reactions are becoming increasingly important in organic synthesis as
		Three areas are particularly important: the reaction of
		catalytically active component in these reactions is frequently a Pd(0) species.
	www.ch.ic.ac.uk /local/organic/4_Palladium.html (262 words)

	Green Reaction Media in Organic Synthesis - Book Information (Site not responding. Last check: 2007-10-25)
		Directed at synthetic organic chemists working in academic and industrial laboratories, it will also serve as a textbook for graduate courses on green chemistry.
		Successful green reactions are considered, and experimental sections at the ends of the chapters provide important practical details, with illustrations of potential applications.
		3.6.9 Heck Reaction by a Fluorous Palladacycle Catalyst
	www.blackwellpublishing.com /140513402x (491 words)

	ACS Organic Division, Organic Reactions--Publication (Site not responding. Last check: 2007-10-25)
		Volumes of Organic Reactions can be purchased at half list price by undergraduate and graduate students, postdoctoral fellows, and research associates in chemistry and biochemistry at schools in Canada, Mexico, and the United States.
		The Reactions of Diazoacetic Esters with Alkenes, Alkynes, Heterocyclic, and Aromatic Compounds: Vinod Dave and E. Warnhoff
		The Hydroformylation Reaction: Iwao Ojima, Chung-Ying Tsai, Maria Tzamarioudaki, and Dominique Bonafoux
	www.organicdivision.org /orgreact.html (2323 words)

	Minced oath - Wikipedia, the free encyclopedia
		A minced oath is an expression based on a profanity which has been altered to reduce or remove the disagreeable or objectionable characteristics of the original expression; for example, "gosh" used instead of "God," "darn" instead of "damn" and "heck" instead of "hell".
		Nearly all profanities have minced variants; the words that are most taboo give rise to the most.
		In the comic strip Dilbert, Heck is a place, reserved for those whose sins are too minor for Hell; its ruler is Phil, the Prince of Insufficient Light.
	en.wikipedia.org /wiki/Heck (721 words)

	Theses from Uppsala University : 554 - Regiocontrol in the Heck-reaction and fast fluorous chemistry
		Phthalimido-protected allylamines are arylated with poor to moderate regioselectivity.
		Single-mode microwave heating can reduce the reaction times of Heck-, Stille- and radical mediated reactions drastically from approximately 20 hours to a few minutes with, in the majority of cases, retained, high regioselectivity.
		The use of heavily fluorinated tin reagents, which proved to be unreactive under thermal heating, is shown to be applicable with microwave-heating and the high fluorous content of the products is utilised with the aim of improving and simplifying the work-up procedure.
	publications.uu.se /theses/abstract.xsql?dbid=554 (255 words)

	Digitale Hochschulschriften der LMU - Chirality Transfer in Acyclic Allylic Systems and New Pd-Catalyzed Heck ...
		In the first part, the use of chirality transfer in acyclic allylic systems was assessed for an intra- and an intermolecular reaction.
		The substitution pattern of the substrate and the reaction conditions were fully optimized.The chirality transfer concept was also used intermolecularly in asymmetric allylic substitution reactions.
		In a second part, it was found that Heck reaction leading to neopentylic palladium species underwent, in the absence of nucleophile, a C-H activation reaction, leading to spiro cyclopropyl compounds.
	edoc.ub.uni-muenchen.de /archive/00002541 (200 words)

	Heck Reaction (Site not responding. Last check: 2007-10-25)
		Patel, P.A.; Ziegler, C.B.; Cortese, N.A.; Plevyak, J.E.; Zebovitz, T.C.; Terpko, M.; Heck, R.F.* J.
		Cortese, N.A.; Ziegler, C.B.; Hrnjez, B.J.; Heck, R.F.* J.
		This is an example of a cyclic-Heck reaction.
	orgchem.chem.uconn.edu /namereact/heckre.html (78 words)

	Publications 1 to 20
		Ohshima, Takashi; Sodeoka, Mikiko; Shibasaki, Masakatsu Manganese(III)-based oxidative free-radical reaction of
		Kim, Yun Sik; Matsunaga, Shigeki; Das, Jagattaran; Sekine, Akihiro; Ohshima, Takashi; Shibasaki Masakatsu Stable, Storable and Reusable Asymmetric Catalyst: a Novel La-linked-BINOL Complex for Catalytic Asymmetric Michael Reaction.
		Nemoto, Tetsuhiro; Ohshima, Takashi; Yamaguchi, Kentaro; Shibasaki, Masakatsu Catalytic Asymmetric Epoxidation of Enones Using La-BINOL-Triphenylarsine Oxide Complex: Structural Determination of the Asymmetric Catalyst.
	homepage.mac.com /takashiohshima/pub/pub2-e.html (459 words)

	Jones Group Research
		Please contact us if you'd like a PDF version of any of these publications emailed to you.
		"Model Intermolecular Asymmetric Heck Reactions Catalyzed by Chiral Pyridyloxazoline Palladium(II) Complexes" D. Dodd, H. Toews, F. d.
		"Homo- and Heterobimetallic Catalysts for the Heck Reaction and a Proposal for a General Catalytic Cooperativity Index" N. Jones and B. James Adv.
	publish.uwo.ca /~njones26/heck.html (57 words)

	Asymmetric Heck Reaction-Carbanion Capture Process. Catalytic Asymmetric Total Synthesis of (-)- (Site not responding. Last check: 2007-10-25)
		Contribution from the Faculty of Pharmaceutical Sciences, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113, Japan
		An asymmetric Heck reaction-carbanion capture process was realized for the first time, making possible the catalytic asymmetric synthesis of various functionalized bicyclo[3.3.0]octane derivatives 6 in up to 94% ee.
		Sodium bromide had interesting effects on this asymmetric Heck reaction-carbanion capture process, and these effects were useful for improving the enantiomeric excess.
	pubs.acs.org /subscribe/journals/jacsat/118/i30/abs/ja9609359.html (99 words)

	Table of contents for Green reaction media in organic synthesis (Site not responding. Last check: 2007-10-25)
		Table of contents for Green reaction media in organic synthesis / edited by Koichi Mikami.
		Bibliographic record and links to related information available from the Library of Congress catalog.
		Contents may have variations from the printed book or be incomplete or contain other coding.
	www.loc.gov /catdir/toc/ecip057/2005003242.html (67 words)

	論文-41 to 60
		Fukuta, Yuhei; Ohshima, Takashi; Gnanadesikan, Vijay; Shibuguchi, Tomoyuki; Nemoto, Tetsuhiro; Kisugi, Takaya; Okino, Tatsufumi; Shibasaki, Masakatsu Enantioselective Syntheses and Biological Studies of Aeruginosin 298-A and its Analogues: Application of Catalytic Asymmetric Phase-Transfer Reaction and Epoxidation.
		Ohshima, Takashi; Shibuguchi, Tomoyuki; Fukuta, Yuhei; Shibasaki, Masakatsu Catalytic asymmetric phase-transfer reactions using tartrate-derived asymmetric two-center organocatalysts.
		Okada, Akihiro; Shibuguchi, Tomoyuki; Ohshima, Takashi; Masu, Hyuma; Yamaguchi, Kentaro; Shibasaki, Masakatsu Enantio- and Diastereoselective Catalytic Mannich-Type Reaction of a Glycine Schiff Base Using a Chiral Two-Center Phase-Transfer Catalyst.
	homepage.mac.com /takashiohshima/pub/pub0.html (443 words)

	Fu Group Project - Palladium and Nickel Catalysis
		Palladium- and nickel-catalyzed cross-couplings and Heck reactions are widely used in synthetic organic chemistry (e.g., in the total synthesis of taxol, rapamycin, and dynemicin).
		In addition, we have pursued mechanistic studies that have provided insight into the reaction pathways.
		• Suzuki reactions of alkyl bromides, tosylates, and chlorides
	web.mit.edu /chemistry/fugroup/proj3_pc.html (209 words)

	Overman Publications (January 2006)
		Enantioselective Synthesis of 3-Alkyl-3-Aryl Oxindoles by Catalytic Asymmetric Intramolecular Heck Reactions"
		Exploratory Investigations of Intramolecular Heck Reactions of (
		Diminished Stereoselection in Intramolecular 6-Exo Heck Reactions of Substrates Having a Hydrocarbon Tether"
	overiris1.ps.uci.edu /publist.html (1850 words)

	American Chemical Society honors Prof. Heck
		UDaily is produced by the Office of Public Relations
		3:51 p.m., Sept. 8, 2005--Richard F. Heck, professor emeritus of chemistry and biochemistry and the namesake of chemistry’s “Heck reaction,” is the recipient of the American Chemical Society’s Herbert C. Brown Award for Creative Research in Synthetic Methods.
		To learn how to subscribe to UDaily, click here.
	www.udel.edu /PR/UDaily/2005/mar/heck090805.html (305 words)

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