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C-bonded metals

G. C. Bond, Metal-Catalysed Reactions of Hydrocarbons, Springer, New York, 2005, 231. [Pg.179]

AF-111 3M Company 1 h at 125°C Bonds metal to metal and metal to honeycomb low-temperature cure... [Pg.471]

As seen in Eq. (am), a Sn—C bond is more reactive than a Si—C bond. Metal-allyl bonds, as shown in Eq. (an), are cleaved without rearrangement. Retention of configuration results with vinyl group transfers. Ring openings of stannacycloalkanes also can... [Pg.350]

Ito, Y. N., Katsuki, T. Oxidation of the C C bond metal catalyzed epoxidation of simple olefins. Asymmetric Oxidation Reactions 2001,19-37. [Pg.607]

C=C)-bonded metal thiophene complexes ] (S,C=C)-bonded metal thiophene complexes j" -Bonded metal thiophene complexes j -Bonded metal thiophene complexes... [Pg.759]

In Grignard reactions, Mg(0) metal reacts with organic halides of. sp carbons (alkyl halides) more easily than halides of sp carbons (aryl and alkenyl halides). On the other hand. Pd(0) complexes react more easily with halides of carbons. In other words, alkenyl and aryl halides undergo facile oxidative additions to Pd(0) to form complexes 1 which have a Pd—C tr-bond as an initial step. Then mainly two transformations of these intermediate complexes are possible insertion and transmetallation. Unsaturated compounds such as alkenes. conjugated dienes, alkynes, and CO insert into the Pd—C bond. The final step of the reactions is reductive elimination or elimination of /J-hydro-gen. At the same time, the Pd(0) catalytic species is regenerated to start a new catalytic cycle. The transmetallation takes place with organometallic compounds of Li, Mg, Zn, B, Al, Sn, Si, Hg, etc., and the reaction terminates by reductive elimination. [Pg.125]

The alka-l,2,4-trienes (ailenylaikenes) 12 are prepared by the reaction of methyl propargyl carbonates with alkenes. Alkene insertion takes place into the Pd—C bond of the ailenyipailadium methoxide 4 as an intermediate and subsequent elimination of/3-hydrogen affords the 1,2,4-triene 12. The reaction proceeds rapidly under mild conditions in the presence of KBr. No reaction takes place in the absence of an alkali metal salt[4j. [Pg.455]

Step 1 Hydrogen molecules react with metal atoms at the catalyst surface The relatively strong hydrogen-hydrogen c bond IS broken and replaced by two weak metal-hydrogen bonds... [Pg.232]

Step 2 The alkene reacts with the metal catalyst The 7C component of the double bond between the two carbons is replaced by two relatively weak carbon-metal c bonds... [Pg.232]

This reasoning was set forth by Johnston and Rapp [1961] and developed by Ovchinnikova [1979], Miller [1975b], Truhlar and Kupperman [1971], Babamov and Marcus [1981], and Babamov et al. [1983] for reactions of hydrogen transfer in the gas phase. A similar model was put forth in order to explain the transfer of light impurities in metals [Flynn and Stoneham 1970 Kagan and Klinger 1974]. Simple analytical expressions were found for an illustrative model [Benderskii et al. 1980] in which the A-B and B-C bonds were assumed to be represented by parabolic terms. [Pg.33]

C-C bonds can be formed by reaction with alkyl iodides or more usefully by reaction with metal carbonyls to give aldehydes and ketones e.g. Ni(CO)4 reacts with LiR to form an unstable acyl nickel carbonyl complex which can be attacked by electrophiles such as H+ or R Br to give aldehydes or ketones by solvent-induced reductive elimination ... [Pg.105]


See other pages where C-bonded metals is mentioned: [Pg.511]    [Pg.123]    [Pg.123]    [Pg.43]    [Pg.46]    [Pg.798]    [Pg.671]    [Pg.767]    [Pg.511]    [Pg.123]    [Pg.123]    [Pg.43]    [Pg.46]    [Pg.798]    [Pg.671]    [Pg.767]    [Pg.79]    [Pg.207]    [Pg.280]    [Pg.366]    [Pg.167]    [Pg.6]    [Pg.12]    [Pg.138]    [Pg.411]    [Pg.490]    [Pg.147]    [Pg.244]    [Pg.351]    [Pg.167]    [Pg.189]    [Pg.399]    [Pg.1720]    [Pg.127]    [Pg.56]    [Pg.1165]    [Pg.167]    [Pg.99]   


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Activation of C-H bonds by metal complexes

C-H bond activation, by metals

C-H bonds metallation

C-H bonds, metallated

C-Metalation

CS-metal

Functionalization of Arenes via C—H Bond Activation Catalysed by Transition Metal Complexes Synergy between Experiment and Theory

Transition Metal Catalyzed Approaches to Lactones Involving C-O Bond Formation

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