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Topic: Dichlorocarbene

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	Sciencemadness Discussion Board - Powered by XMB
		I think that it is not possible to react acetone with dichlorocarbene, since chloroform immediately reacts with acetone directly to chlorobutanol when a base is added.
		Reaction of dichlorocarbene with sodium phenoxide produces salicylaldehyde (though the yields are really low, and isolation of the product is a pain).
		The theoretical plan of action was to subject MEK with dichlorocarbene, forming either 2,2-dichloro 3-ethyl 3-methyloxirane, or 2-chloro 2-methylbutanoyl chloride.
	www.sciencemadness.org /talk/viewthread.php?tid=5537 (818 words)

	carbene
		The elimination of water from 2-methyl-3-butyn-3-ol followed by the addition of dichlorocarbene to the elimination product affords an excellent reaction sequence for the application of spectroscopic methods for the analysis of organic reaction products.
		Students should be asked to predict which product will be formed and should be able to come to the conclusion that the addition will occur at the double bond rather than the triple because of extra strain in the cyclopropene system.
		C-H and the continued presence of a triple bond and sp C-H and the nmr is consistent with addition to the double bond).
	virtual.yosemite.cc.ca.us /smurov/carbene.htm (1031 words)

	Choi, Wonyong (1996-02-22) Photooxidative and photoreductive degradation of chlorinated hydrocarbons on aqueous ...
		Dichlorocarbene and trichloromethyl radical are trapped with 2,3-dimethyl-2butene during the photocatalytic degradation of CCI4.
		A two-electron photoreductive pathway (via dichlorocarbene formation) is suggested to be the dominant mechanism leading to the full degradation of CCI4.
		The photocatalytic degradation reactions of CHCI3, CHBr3, CCI4, and CCI3CO2 are investigated in aqueous TiO2 suspensions.
	etd.caltech.edu /etd/available/etd-05052006-084215 (399 words)

	Dichlorodiazirine: a nitrogenous precursor for dichlorocarbene.
		The reaction of 3-p-nitrophenoxy-3-chlorodiazirine with a 1.1:1.0:1.6 blend of tetrabutylammonium chloride, cesium chloride, and the ionic liquid 1-butyl-3-methylimidazolium chloride at 40-50 degrees C under vacuum at 1 mm.Hg produced a melt from which dichlorodiazirine distilled into a cold trap containing pentane at -70 degrees C over 6-7 h.
		Dichlorodiazirine, the first nitrogenous precursor for dichlorocarbene, was reasonably stable in the dark at 25 degrees C and efficiently generated the carbene upon photolysis.
		Pentakis(carbene) generated by irradiation of the pentakis(diazo) compound was shown to have a high-spin state with S = 4.4 at 2.0 K. J Org Chem.
	lib.bioinfo.pl /pmid:16218614 (1119 words)

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		Both the footbag and the foams that use it betwen sometimes wined to as hacky active, dichlorocarbene, pwd, or imbriam sack.
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	celebrex.i-find1.be (2384 words)

	Chloroform (Site not responding. Last check: 2007-10-09)
		Chloroform is often used as a tool in kidnapping, especially in books and movies.
		Chloroform reacts with aqueous sodium hydroxide (preferably in the presence of a phase transfer catalyst) to produce dichlorocarbene.
		This is used to effect ortho-formylation of activated aromatic rings such as phenols, producing aryl aldehydes in a reaction known as the Reimer-Tiemann reaction.
	chloroform.iqnaut.net (763 words)

	Professor Farooq A. Khan, Ph.D.
		While the ultimate goal of our research is to functionalize carbon nanotubes, we re also working on the structurally similar fullerene C
		The first type of functionalization is a cyclopropanation with a dichlorocarbene.
		We are particularly interested in enhancing the rates of the reaction by applying the powerful and proven techniques of ultrasounds.
	www.westga.edu /~chem/facultydocs/khan.htm (346 words)

	CSIRO PUBLISHING - Australian Journal of Chemistry
		Some dichlorocarbene adducts of alkoxycyclohexa- 1,4-dienes and their conversion into hydroxycyclopropanes and cycloheptenones
		Some reactions of dichlorocarbene adducts of alkoxycyclohexa-1,4-dienes have been examined.
		β-(2?-Pyranyloxy)-1,4,5,8-tetra- hydronaphthalenes give rise with dichlorocarbene to bis- or tris- adducts in which one cyclopropane ring can be opened through the hydroxycyclopropane to give ring-fused cycloheptenone derivatives.
	www.publish.csiro.au /nid/51/paper/CH9710331.htm (100 words)

	Sciencemadness Discussion Board - Powered by XMB
		Yes, reacting chloroform with a strong, concentrated base will produce dichlorocarbene.
		However, the base should also be able to dissolve in chloroform.
		Methinks if you did form dichlorocarbene, not a lot of it was formed.
	www.sciencemadness.org /talk/viewthread.php?tid=3931 (581 words)

	Paul J. Dagdigian (Site not responding. Last check: 2007-10-09)
		An understanding of the dependence of the rate constant upon the vibrational quantum number is important in modeling atmospheric emissions of these free radicals in the IR and near IR.
		We have also initiated the study of the photodissociation dynamics of halocarbenes, for example dichlorocarbene.
		There has been considerable interest in the spectroscopy and dynamics of these species because of their importance in a number of gas-phase reaction environments.
	www.jhu.edu /~chem/dagdig/main.html (367 words)

	Dichlorocarbene - Wikipedia, the free encyclopedia
		Dichlorodiazirine: A Nitrogenous Precursor for Dichlorocarbene Gaosheng Chu, Robert A. Moss, and Ronald R. Sauers J.
		A Facile Procedure for the Generation of Dichlorocarbene from the Reaction of Carbon Tetrachloride and Magnesium using Ultrasonic Irradiation Haixia Lin, Mingfa Yang, Peigang Huang and Weiguo Cao Molecules 2003, 8, 608-613 Online Article
		This page was last modified 18:57, 14 April 2006.
	en.wikipedia.org /wiki/Dichlorocarbene (229 words)

	IngentaConnect Three-component reaction between dichlorocarbene, acetylenic este... (Site not responding. Last check: 2007-10-09)
		Three-component reaction between dichlorocarbene, acetylenic esters and aromatic aldehydes.
		The zwitterionic intermediate created from the reaction between dichlorocarbene and acetylenic esters is trapped by aromatic aldehydes to afford polyfunctionalised furans in fairly good yields.
		You will be able to remove this item from your shopping cart at any time before you have completed check-out.
	www.ingentaconnect.com /content/stl/jcr/2006/00002006/00000009/art00015 (90 words)

	IUPAC Gold Book (via CobWeb/3.1 planetlab2.isi.jhu.edu) (Site not responding. Last check: 2007-10-09)
		C: and its derivatives, in which the carbon is covalently bonded to two univalent groups of any kind or a divalent group and bears two nonbonding electrons, which may be spin-paired (singlet state) or spin-non-paired (triplet state).
		In systematic name formation, carbene is the name of the parent hydride :CH hence, the name dichlorocarbene for :CCl
		However, names for acyclic and cyclic hydrocarbons containing one or more divalent carbon atoms are derived from the name of the corresponding all-
	goldbook.iupac.org.cob-web.org:8888 /C00806.html (147 words)

	OCOL Mechanisms & Animations (Site not responding. Last check: 2007-10-09)
		In the presence of a strong base, chloroform undergoes a 1,1-elimination of HCl to generate the powerful electrophile, dichlorocarbene.
		You should note that dichlorocarbene is neutral, but since the carbon is surrounded by only six electrons, it is a powerful electrophile.
		The direct addition of this electrophile to an alkene
	www.chem.uic.edu /web1/OCOL3/MECH/07_09.HTM (59 words)

	Molecular modelling
		In this section, several such electronic aspects of reactivity will be illustrated, showing how explicit consideration of the electrons in molecules must be taken into account.
		Orbital control of reactivity is illustrated in the reaction of compound 12 with electrophilic reagents such as dichlorocarbene or peracid;
		In modelling such a reaction, we require a program where the geometry of 12 can be predicted, and the energy of the orbitals calculated and their form displayed graphically.
	www.ch.ic.ac.uk /local/organic/t5.html (3259 words)

	IngentaConnect The effects of filler content on cure and mechanical properties o... (Site not responding. Last check: 2007-10-09)
		A study has been carried out on the curing characteristics and mechanical properties of carbon fl filled dichlorocarbene modified styrene butadiene rubber (DCSBR).
		Processing characteristics such as optimum cure time and maximum torque increases with increasing of the concentration of carbon fl in DCSBR whereas scorch time decreases.
		Keywords: bound rubber; cure characteristics; dichlorocarbene modified styrene butadiene rubber; flame retardency; mechanical properties; oil resistance
	www.ingentaconnect.com /content/klu/jpol/2005/00000011/00000004/00006571 (286 words)

	Carbon Tetrachloride (HSG 108, 1998)
		Phosgene may be detoxified by reaction with water to produce carbon dioxide or with glutathione or cysteine.
		Formation of chloroform and dichlorocarbene occurs under anaerobic conditions.
		Covalent binding to macromolecules and lipid peroxidation occur via metabolic intermediates of carbon tetrachloride.
	www.inchem.org /documents/hsg/hsg/hsg108.htm (4032 words)

	PC Department of Chemistry and Biochemistry \| Research Opportunities
		Design and synthesis of supramolecular compounds to facilitate the transport of biologically relevant molecules through lipid membranes
		Synthesis of chiral oxiranes and reactions of dichlorocarbene with beta-hydroxyamines
		The results of these original research projects are often presented by students and faculty at regional and national meetings of the professional societies.
	www.providence.edu /chm/research.htm (404 words)

	CiteULike: The effects of filler content on cure and mechanical properties of dichlorocarbene modified styrene ... (Site not responding. Last check: 2007-10-09)
		CiteULike: The effects of filler content on cure and mechanical properties of dichlorocarbene modified styrene butadiene rubber/carbon fl composites
		The effects of filler content on cure and mechanical properties of dichlorocarbene modified styrene butadiene rubber/carbon fl composites
		Note: You or your institution must have access rights to this article.
	www.citeulike.org /article/93132 (72 words)

	Q about organometallic compounds (Site not responding. Last check: 2007-10-09)
		I know about reaction tetrachloromethane(CCl4) with magnesium at room temp and dichlorocarbene is generated:
		Yes thats most possible recombination if theres no aceptor for this very active carbene like amines to form the ilide r to alkenes..you know the Hoffman isonitrile chimie and the related carbene methodologies
		In fact may be this reaction not so fast because when using Phase transfer catalyst and biphasic reaction media then the formed dichlorocarbene very efficiently move to the amine phase before this tetrachlorethylene formation...
	www.chemicalforums.com /index.php?topic=7023.msg31710 (354 words)

	phase transfer catalytic reactions (Site not responding. Last check: 2007-10-09)
		In a dichlorocarbene addition to cyclohexene using a phase-transfer catalyst, why is it important to vigorously shake the mixture??
		Also, which carbene (:CH2 or :CCl2) would be expected to be more reactive and why?
		Recall that a phase transfer reaction requires two phases, one is polar and the other nonpolar.
	www.chemicalforums.com /index.php?topic=129.msg555 (561 words)

	Chemistry 2440 - Quiz #13 - KEY - 10 points - Dr. Howard Black - December 4, 2000 (Site not responding. Last check: 2007-10-09)
		Chemistry 2440 - Quiz #13 - 10 points - Dr. Howard Black - December 4, 2000 -
		), which occurs upon treatment with t-butoxide, leading to the formation of dichlorocarbene.
		If more than one product is formed, provide only the major one.
	www.ux1.eiu.edu /~cfthb/classes/2440/2000/Quiz13key.htm (68 words)

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