Ohira–Bestmann reaction
The Seyferth–Gilbert homologation is a chemical reaction of an aryl ketone 1 (or aldehyde) with dimethyl (diazomethyl)phosphonate 2 and potassium tert-butoxide to give substituted alkynes 3. Dimethyl (diazomethyl)phosphonate 2 is often called the Seyferth–Gilbert reagent.
This reaction is called a homologation because the product has exactly one additional carbon more than the starting material.

This is an excerpt from the article Ohira–Bestmann reaction from the Wikipedia free encyclopedia. A list of authors is available at Wikipedia.
The article Ohira–Bestmann reaction at en.wikipedia.org was accessed 64 times in the last 30 days. (as of: 07/17/2013)
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The Ohira-Bestmann Reaction: Pro or Con?…
12.06.2008 · A major portion of my research on the way to getting a fancy hoodie and sweet-ass piece of paper deals with the reactions of alkynes. For those of you not ...
educhemiology.wordpress.com/2008/06/12/the-ohira-bestmann-reaction-pro-or-con/
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Base-Mediated Reaction of the Bestmann−Ohira Reagent with ...
Feb 16, 2007 ... Base-Mediated Reaction of the Bestmann−Ohira Reagent with Nitroalkenes for the Regioselective Synthesis of Phosphonylpyrazoles.
pubs.acs.org/doi/abs/10.1021/ol070107s
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Seyferth-Gilbert Homologation (Ohira-Bestmann) - Roche Research ...
January, 15th 2013. Florida Atlantic University. College of Engineering & Computer Science. Named reactions: Seyferth-Gilbert Homologation. (Ohira-Bestmann).
www.rocheresearchgroup.com/wp-content/uploads/2011/06/Seyfert_Gilbert_HomologationBT.pdf
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Bestmann–Ohira Reagent
14.3oxazoles conveniently by reaction of Bestmann–Ohira reagent and aromatic nitriles in the presence of a catalytic amount of rhodium(II) acetate. Synlett 1996..
www.scribd.com/doc/48966723/Bestmann%E2%80%93Ohira-Reagent
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Three-Component Reaction Using the Bestmann–Ohira Reagent: A ...
Mar 26, 2010 ... BOR-n to run: A new one-pot multicomponent reaction involving the use of an aldehyde, a cyanoacid derivative, and the Bestmann–Ohira ...
onlinelibrary.wiley.com/doi/10.1002/anie.200906781/abstract
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Seyferth–Gilbert homologation - Wikipedia, the free encyclopedia
Contents. 1 Reaction mechanism; 2 Bestmann modification; 3 References; 4 See also ... Ohira–Bestmann reagent. IUPAC name. dimethyl (1-diazo-2-oxopropyl) ...
en.wikipedia.org/wiki/Seyferth%E2%80%93Gilbert_homologation
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Seyferth-Gilbert Homologation - Organic Chemistry Portal
Bestmann-Ohira Reagent. The Seyferth-Gilbert Homologation is the base- promoted reaction of dimethyl (diazomethyl)phosphonate with aldehydes and aryl ...
www.organic-chemistry.org/namedreactions/seyferth-gilbert-homologation.shtm
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Name Reactions - Organic Chemistry Portal
Baylis-Hillman Reaction · Beckmann Rearrangement · Benzilic Acid Rearrangement · Benzoin Condensation · Bergman Cyclization · Bestmann-Ohira Reagent.
www.organic-chemistry.org/namedreactions/
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Bestmann-Ohira Reagent Reaction - Named Organic Reaction
The Bestmann-Ohira reagent reaction is a special case of the Seyferth-Gilbert homolgation reaction. The Bestmann-Ohira reagent uses dimethyl ...
chemistry.about.com/od/namedreactions/ss/Bestmann-Ohira-Reagent-Reaction.htm
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BESTMANN-OHIRA's reagent - The most famous names of organic ...
BLAISE reaction · :: BREDT's rule · :: BROOK rearrangement · :: BUCHWALD- HARTWIG Cross-Coupling · :: BURGI-DUNITZ angle. BESTMANN-OHIRA's reagent ...
www.cedricbrule.com/page.asp?rec=113&dossier=3
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Ohira–Bestmann reaction in science
[PDF]Seyferth-Gilbert Homologation (Ohira-Bestmann) - Roche Research ...
January, 15th 2013. Florida Atlantic University. College of Engineering & Computer Science. Named reactions: Seyferth-Gilbert Homologation. (Ohira-Bestmann).
Bestmann–Ohira Reagent - Scribd
Feb 16, 2011 ... Bestmann–Ohira Reagent - Download as PDF File (.pdf), Text file (.txt) or read online.
[PDF]View PDF Version - RSC Publishing - Royal Society of Chemistry
Mar 24, 2010 ... chemistry, such as the Sonogashira cross-coupling reaction,3 the Grubbs olefin ..... 5.3 Tandem processes using Ohira-Bestmann reagent.
Dr I.N.N Namboothiri
Postdoctoral: Columbia University, University of North Texas, Bar-Ilan ... Phosphonates via Base-Assisted Reaction of the Bestmann-Ohira Reagent with Enones ...
Seyferth-Gilbert Homologation - Organic Chemistry Portal
Bestmann-Ohira Reagent. The Seyferth-Gilbert Homologation is the base- promoted reaction of dimethyl (diazomethyl)phosphonate with aldehydes and aryl ...
Books on the term Ohira–Bestmann reaction
Total Synthesis of Plakortide E and Biomimetic Synthesis of ...
Total Synthesis of Plakortide E and Biomimetic Synthesis of ...
Xiao-Yu Sun, 2012
In 1979 Gilbert and coworkers improved the procedure of the reaction, and extended its scope [46, 47]. Ohira and Bestmann made a further modification of this reaction based upon generation of the dimethyl(diazomethyl)phosphonate in situ ...
Reaction (Reflection Series)
Reaction (Reflection Series)
Jessica Roberts, 2012
Harmony… I’ve previously had that in my life, but only once, briefly, a while ago. It was during the time I’d started my first year of college. My own apartment, a new old car, and a life free of deadbeat stepfathers, all of which was fulfilling enough. But if it wasn’t, I also had a best friend, soul mate, and boyfriend all in one. Yes, life was n...
Organic Syntheses Based on Name Reactions: a practical guide to ...
Organic Syntheses Based on Name Reactions: a practical guide to ...
Alfred Hassner, Irishi Namboothiri, 2011
OHIRA–BESTMANN Acetylene Synthesis Synthesis of acetylenes 5, 11 from aldehydes 4, 9 by reaction with a ketophosphonate 1 and tosyl azide 2 in the presence of base. Proceeds via a diazoketophosphonate 3, 10 and involves a ...
Reaction: The End of the Iron Age, Book 1
Reaction: The End of the Iron Age, Book 1
Seth M. Baker, 2012
Pissed-off interdimensional demons threaten to overrun the world, and only one man can stop them: perpetually nervous, paper-eating valedictorian Amadeus Brunmeier.But the police believe he killed his father, his best friend calls him a frightened rabbit, and the girl he loves thinks he's nothing but a mouth-breathing weirdo. To prove everyone...
Synthesis of Heterocycles Via Multicomponent Reactions I
Synthesis of Heterocycles Via Multicomponent Reactions I
Romano Orru, Romano V. A. Orru, Eelco Ruijter, 2010
A similar reaction was performed earlier, with an intermediate separation of the reactants [40]. ... the Ley research group [42] has used a Bestmann– Ohira reagent (dimethyl 1-diazo-2-oxopropylphosphonate [43]) to synthesize various alkynes ...
Natural Reaction - A Mary O'Reilly Paranormal Mystery (Book 6)
Natural Reaction - A Mary O'Reilly Paranormal Mystery (Book 6)
Terri Reid, 2011
The last few students climbed through windows, black smoke billowing out of them. The teacher turned to his student. “I’ll let you down first.”“But Coach, whose going to help you?”“Hey, you’re my best fielder, I expect to jump right into your arms,” he said. “Just promise not to whip me over to Smith for a double play.”The young man, his face strea...
The Development of Tandem Reactions Involving Enyne Metathesis to ...
The Development of Tandem Reactions Involving Enyne Metathesis to ...
Bryan Michael Schertzer, 2006
... Figure 6) and Ohira/Bestmann89,90 (eq 2, Figure 6) protocols returned low yields with product epimerization observed in the Ohira/Bestmann reaction. It was also necessary to synthesize phosphonates 89 and 90. Figure 6 O MeOP MeO 89 ...
Organic Syntheses Based on Name Reactions, Third Edition: a practical guide to 750 transformations
Organic Syntheses Based on Name Reactions, Third Edition: a practical guide to 750 transformations
Alfred Hassner and Irishi Namboothiri, 2012
Organic Syntheses Based on Named Reactions is an indispensable reference companion for chemistry students and researchers. Building on Hassner & Stumer's highly regarded 2e, this new work reviews 750 reactions, with over 100 new stereoselective and regioselective reactions. Each A-Z entry provides a carefully condensed summary of valuable ...
The Manual of Scientific Style: A Guide for Authors, Editors, and ...
The Manual of Scientific Style: A Guide for Authors, Editors, and ...
Harold Rabinowitz, Suzanne Vogel, 2009
E1, continued Leuckart–Wallach reaction Leuckert amide synthesis Levinstein process Ley Oxidation Lieben ... Nozaki–Hiyama–Kishi Nickel/Chromium Coupling reaction Nucleophilic acyl substitution O Ohira–Bestmann reaction Olefin ...
Totalsynthese des Marinen Makrolids Palmerolid A: Zugang zu einem Naturstoff mit pharmakologisch vielversprechendem...
Totalsynthese des Marinen Makrolids Palmerolid A: Zugang zu einem Naturstoff mit pharmakologisch vielversprechendem...
Julia Sünner, 2012
Der Naturstoff Palmerolid A wurde im Jahr 2006 erstmals isoliert und zeigte in zellbiologischen Untersuchungen eine sehr starke und außergewöhnlich selektive cytotoxische Aktivität gegenüber ausgewählten Krebszelllinien. Als 20-gliedriges Makrolacton mit fünf Stereozentren, mehreren isolierten und konjugierten Doppelbindungseinheiten und einer Dien...
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Blog posts on the term
Ohira–Bestmann reaction
The Ohira-Bestmann Reaction: Pro or Con? « educhemiology
Just another WordPress.com weblog (by Cat Herder)
educhemiology.wordpress.com/2008/06/12/the-ohira-bestmann-reaction-pro-or-con/
TotallySynthetic.com » Blog Archive » 35-Deoxy Amphotericin B Methyl
Carreira, Szpilman and Manthorpe. ACIEE, 2008, EarlyView.
totallysynthetic.com/blog/?p=985
Bestmann Ohira Reagent | Science Homework Help
Bestmann Ohira Reagent A compound or mixture which is added to reaction system results a chemical reaction and from a new or different compound, product, is called as chemical reagent. It may or may not consume in the chemical reaction.
sciencehomeworkhelp.wordpress.com/2013/05/20/bestmann-ohira-reagent/
Organic Chemistry Reactions List Mechanism Chart of Organic reactions sheet | JPbuzz
list of all Organic chemistry reactions sheet,up to date organic reactions chart pdf,organic reactions topics mechanisms summary organic compounds hydrocarbons
www.jpbuzz.com/2011/organic-chemistry-reactions-list-mechanism-chart-of-organic-reactions-sheet/
DON BLOG
ALDEHYDE An aldehyde ( /ˈældɨhaɪd/) is an organic compound containing a formyl group. This functional group, with the structure R-CHO, consists of a carbonyl center (a carbon double bonded to oxygen) bonded to hydrogen and an R group,[1] which is any generic alkyl or side chain.
sandeepcoo.blogspot.com/2012/11/aldehyde-aldehyde-ldhad-is-organic.html
Total Synthesis of (+)-Sieboldine A | Syntheticnature
Total Synthesis and general organic chemistry
syntheticnature.wordpress.com/2010/07/24/total-synthesis-of-sieboldine-a/
chemistry online courses: All Types of chemical reactions in organic and inorganic chemistry by examples
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chemistry-online-courses.blogspot.com/2013/05/All-Types-of-chemical-reactions-in-organic-and-inorganic-chemistry-by-examples.html
(+/-)-Echinopine B « B.R.S.M.
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Journal Article Reading (B)Log: Total Synthesis of (-)-Stemoamide
Link: JOC Note ASAPStaffan Torssell, Emil Wanngren, and Peter Somfai*KTH Chemical Science and Engineering, Department of Organic Chemistry, Royal Institute of Technology, S-100 44 Stockholm, SwedenThis is a rather short synthesis of (-)-stemoamide (1), the simplest member of various alkaloids present in Stemona tuberosa. Traditionally, the root extracts of this plant have been employed in Chinese and Japanese folk medicine for respiratory disorders and also as an antihelminthic.
journalarticlereadingblog.blogspot.com/2007/04/total-synthesis-of-stemoamide.html
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