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Alkyl Grignards

The coupling of alkyl Grignard reagents with alkyl iodides to afford alkanes by use of dppf as a ligand has been reported[449], but re-examination of the reaction has shown that only reduction takes place, and no coupling was observed[450]. [Pg.212]

Reaction of pyridazine 1-oxide with phenylmagnesium bromide gives 1,4-diphenyl-butadiene as the main product and l-phenylbut-l-en-3-yne and 3,6-diphenylpyridazine as by-products, while alkyl Grignard reagents lead to the corresponding 1,3-dienes exclusively (79JCS(P1)2136>. [Pg.29]

Aluminium alkyls Chromic oxide Alkylations/Grignard reactions Acute thermal burns, lung damage Cr may be converted to the more toxic and carcinogenic Cr ... [Pg.121]

In contrast to these ring-opening reactions, it was observed by Horner and Schwahn that 4-arylidene-(isopropylidene and cyclo-hexylidene)-oxazolones react with alkyl Grignard reagents by conjugate addition to give saturated azlactones 29a as the only products [Eq. (18)]. [Pg.87]

The reaction of tert-alkyl Grignard reagents with carboxylic acid chlorides in the presence of a copper catalyst provides ieri-alkyl ketones in substantially lower yields than those reported here.4,14 The simplicity and mildness of experimental conditions and isolation procedure, the diversity of substrate structural type, and the functional group selectivity of these mixed organocuprate reagents render them very useful for conversion of carboxylic acid chlorides to the corresponding secondary and tertiary alkyl ketones.15... [Pg.126]

Although the formation of tetraalkylferrates, for example, in the first step of a cross-coupling reaction starting from Fe(-i-3)-salts and alkyl Grignard reagents, seems possible, until now there is no analytical or spectroscopic proof for such a species. In fact, it was shown that Fe(-i-3) is reduced by MeLi or MeMgBr to Fe(-i-2) under release of ethane [5, 6]. [Pg.183]

Cobalt-catalysed coupling between aryl bromides and alkyl Grignards... [Pg.168]

Liquid-solid reactions (Friedel-Crafts acylations and alkylations, Grignard reactions) 1-5 50-250 250 250... [Pg.225]

Alkyl lithium and alkyl Grignard reagents react with aromatic nitro compounds in a similar way to give alkylated products (Eq. 9.23).37... [Pg.311]

Metal alkyls can be prepared in a simple manner from the main group halides (X = Cl, Br, I) and the appropriate alkyl Grignard reagent (RMgl) or the alkyllithium salt (RLi), as shown for the cadmium alkyls (Equation (2)).13 The elimination of impurities from the precursor source is of great importance, as any remaining impurities are invariably carried over into the growing semiconductor layers. Incorporation of impurities, even at levels as low as 1015 free carriers per cubic centimeter (one part in ca. 107), can drastically affect the electronic properties of the... [Pg.1012]

Alkyl Grignard or phenyllithium addition to 31 affords 1-substituted... [Pg.99]

Organometallic compounds vary widely in their properties and reactivity, just as do the elements from which they are produced. These compounds may be lithium alkyls, Grignard reagents, or organotin compounds. Accordingly, there is no universal method for preparing the compounds, but we will present here some of the types of reactions that have been widely employed. [Pg.396]

Scheme 15 Reaction of conjugated dienes with alkyl Grignard reagents and CI2TiCp2. Scheme 15 Reaction of conjugated dienes with alkyl Grignard reagents and CI2TiCp2.
As already mentioned, unsubstituted PT is an insoluble and infusible material. Once the polymer is prepared, it is difficult (if not impossible) to further process it as a material for electronic applications. The solubility can be greatly enhanced by the introduction of side chains at position 3 (or at both, 3 and 4). The most widely studied side chains are n-alkyl substituents that can be easily introduced into the thiophene core by reaction of 3-bromothio-phene with alkyl-Grignard reagents [464]. [Pg.185]

Examples Aluminum alkyl Grignard reagent Finely divided metals Iron sulfide Examples Noncombustible materials Flammables or combustibles needing an ignition source to start burning... [Pg.53]


See other pages where Alkyl Grignards is mentioned: [Pg.211]    [Pg.268]    [Pg.209]    [Pg.279]    [Pg.724]    [Pg.162]    [Pg.722]    [Pg.723]    [Pg.201]    [Pg.299]    [Pg.764]    [Pg.838]    [Pg.484]    [Pg.164]    [Pg.537]    [Pg.538]    [Pg.938]    [Pg.1025]    [Pg.18]    [Pg.268]    [Pg.44]    [Pg.52]    [Pg.201]    [Pg.299]    [Pg.764]    [Pg.838]    [Pg.189]    [Pg.1]    [Pg.220]    [Pg.149]    [Pg.144]    [Pg.254]    [Pg.259]    [Pg.452]    [Pg.279]   
See also in sourсe #XX -- [ Pg.296 , Pg.301 , Pg.311 ]




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2,2 -Pyridilic acid with primary alkyl Grignard reagents

Action of Dimethyl Sulphate on Magnesium Alkyl or Aryl Halide (Grignard)

Alkyl Grignard

Alkyl Grignard reagents

Alkyl Grignard reagents Subject

Alkyl hahde Grignard reagents from

Alkyl halides Grignard reaction

Alkyl halides Grignard reagent formation

Alkyl halides and Grignard reagents

Alkyl halides vinyl Grignard reagents

Alkyl halides, reaction with indole Grignard

Alkyl halides, reaction with indole Grignard reagents

Alkyl iodides cross-coupling with Grignard reagents

Alkylation with a Grignard reagent

Allenes, bromocoupling reactions alkyl Grignard reagents

Aryl Grignard reagents alkylation

Benzene, 1,3,5-tribromo with primary alkyl Grignard reagents

Benzene, trichlorodialkylation coupling reactions with primary alkyl Grignard

Benzene, trichlorodialkylation with primary alkyl Grignard reagents

Benzofurans with alkyl Grignard reagents

Carboxylic acids with alkyl Grignard reagents

Copper® iodide vinyl Grignard reagent alkylation

Cross-coupling reactions alkyl halides with Grignard reagents

Cyclohexanones reactions with alkyllithium and alkyl Grignard

Dilithium tetrachlorocuprate vinyl Grignard reagent alkylation

Ethylene, 1,1-dichlorocoupling reactions with alkyl Grignard reagents

Ethylene, l-bromo-2-phenylthiocoupling reaction with alkyl Grignard reagents

Ethylene, l-bromo-2-phenylthiocoupling reaction with secondary alkyl Grignard reagents

Grignard reaction: alkylation

Grignard reaction: alkylation estimation

Grignard reaction: alkylation structure

Grignard reaction: alkylation with cadmium chloride

Grignard reaction: alkylation with carbonyl compounds

Grignard reaction: alkylation with mercury halides

Grignard reagent alkylation with

Grignard reagent chlorosilane alkylation with

Grignard reagent partial alkylation with

Grignard reagents alkylation

Grignard reagents coupling reactions with alkyl halides

Grignard reagents from alkyl halide reduction

Grignard reagents from alkyl halides

Grignard reagents primary alkyl

Grignard reagents synthesis from alkyl halides

Grignard reagents with alkyl halides

Grignard reagents, alkyl reaction with cyclohexanone

Grignard reagents, alkyl stereoselectivity

Grignard reagents, bonding alkyl halides

Grignard reagents, bonding coupling with alkyl halides

Grignard reagents, bonding from alkyl halides

Grignard reagents, reaction with alkyl halides

Halides alkyl Grignard reagents

Halides coupling reactions with primary alkyl Grignard

Halides, alkyl coupling with Grignard reagents

Heteroarylation alkyl Grignard reagents

Indole Grignard reagents with alkyl halides

Magnesium, reaction with alkyl halides form Grignard reagents

Nickel complexes Grignard reagent alkylation

P-Lactones Grignard reagent alkylation

Palladium complexes catalyst, Grignard reagent alkylation

Purine, 6-chlorocoupling reactions with primary alkyl Grignard reagents

Purine, 6-methylthiocoupling reactions with primary alkyl Grignard reagents

Pyrrole Grignard reagents, alkylation

Reaction XIV.—(a) Action of Magnesium Alkyl or Aryl Halide on Aldehydes and Ketones (Grignard)

Reactions of Alkyl Halides Grignard Reagents

Sec-alkyl Grignard reagents

Sulfones, alkylation with Grignard reagents

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