Magnesiums organo

Anhydrous diethyl ether is the customary solvent used when preparing organo magnesium compounds Sometimes the reaction does not begin readily but once started It IS exothermic and maintains the temperature of the reaction mixture at the boiling point of diethyl ether (35°C)... [Pg.591]

The main synthetic routes for the preparation of organoplumbanes are the alkylation of lead(II) chloride by organo-magnesium, -lithium, -aluminum and -boron compounds156. [Pg.486]

The organo-magnesium compounds are sensitive to the action of oxygen. This must always be kept in mind if they are not used... [Pg.341]

G. Cahiez, S. Marquais, and M. Alami 135 MANGANESE-COPPER-CATALYZED CONJUGATE ADDITION OF ORGANO-MAGNESIUM REAGENTS TO a,(J-ETHYLENIC KETONES PREPARATION OF 2-(1,1 -DIMETHYL-PENTYL)-5-METHYLCYCLO-HEXANONE FROM PULEGONE... [Pg.153]

Coupling of acetylenes and halides, copper-promoted, 50,100 Cuprous chloride, reaction with an organo-magnesium compound, 50,98... [Pg.77]

Zur Umwandlung von Organo-lithium-Verbindungen und Organo-magnesium-halogeni-den in primare Amine eignet sich die Reaktion mit O-Diphenylphosphinyl-hydroxyl-... [Pg.1107]

Organo-magnesium compounds as nucleophiles. Use of Grignard reagents in syntheses. ... [Pg.7]

In its action on organo-magnesium compounds,3 sulphur tetrachloride behaves as if it consists only of sulphur dichloride and chlorine, and its reactions with sulphur trioxide (see before) appear to be capable of a similar interpretation in these cases it is indeed possible that sulphur dichloride and chlorine, present as products of dissociation, are the actual agents in the chemical change. [Pg.83]

Other chemical processes in which sulphur dioxide functions as an oxidising agent include the interaction of sulphur dioxide with stannous chloride or titanous chloride in aqueous solution containing hydrochloric acid, when the salts are converted into the corresponding tetrachlorides 5 also the interaction of the gas with organo-magnesium compounds, when the organic sulphide is produced to some extent.6... [Pg.116]

This diethyl sulphite is a colourless liquid of b.pt. 161° C., and is quite distinct from the foregoing isomeric ethyl ethylsulphonate (which boils at 207° C.), being decomposed by aqueous alkali with formation of alkali sulphite and ethyl alcohol2 and reacting with organo-magnesium... [Pg.134]

Carbon nucleophiles which do not readily trigger the rearrangement of epoxides include lithiated dithianes [295, 304], lithiated sulfones [238], lithiated diarylphos-phine oxides [240, 305], lithium enolates [306], and allylic organolithium or organo-magnesium compounds [298, 307-310] (Scheme4.67). [Pg.105]

These compounds are prepared by treating the sodium alloy of the metal with the required halogen compound, and in the case of tin two other methods are available, namely, the treatment of tin tetrachloride with sodium in the presence of the halogen organic compound, and the action of organo-magnesium compounds upon tin tetrachloride. [Pg.82]

Organo magnesium halides and organo lithium compounds are readily accessible alkylation and arylation reagents. However, they have little practical importance for the preparation of diorgano tellurium derivatives. Tellurium tetrachloride cannot be alkylated or arylated stepwise to give, for instance, diorgano tellurium dihalides, which could... [Pg.384]

Grignard, Victor (1871—1935). French chemist, receipient (with Paul Sabatier) of Nobel Prize in chemistry (1912). Discovered organo-magnesium compds used for organic synthesis (See Grignard s Reaction and Reagent)... [Pg.784]

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