Allyl Magnesium Chloride

Other sources of by-product HCl include allyl chloride, chlorobenzenes, chlorinated paraffins, linear alkylbenzene, siHcone fluids and elastomers, magnesium, fluoropolymers, chlorotoluenes, benzyl chloride, potassium sulfate, and agricultural chemicals. 

Metal oxides. Magnesium oxide is used to cure polychloroprene by converting its few active allylic chloride from 1,2 addition into ether cross-links. There is a synergistic effect when magnesium oxide is used in combination with t-butyl phenolic resins in solvent-borne polychloroprene adhesives. When solvent is removed, the phenolic group in the resin reacts with the magnesium oxide to cross-link [49]. 

The majority of catalytic enantioselective allylation reactions involve the chiral Lewis-acid-catalysed additions of allylsilanes or allylstannanes to carbonyl compounds. Monothiobinaphthol has been used by Woodward et al. as a chiral promoter in the enantioselective catalytic allylation of aryl ketones with impure Sn(allyl)4, prepared from allyl chloride, air-oxidised magnesium and SnCl4. Therefore, the allylation of arylketones in these conditions was achieved very efficiently, since the corresponding allylic alcohols were formed in... 

Oppolzer and Battig have prepared the marine sesquiterpene via ingenious application of iterative intramolecular magnesium-ene reactions . Aldehyde 672 was converted to the allylic chloride 673, the Grignard of which was heated at 60 °C for 23 hours and subsequently treated with acrolein to furnish alcohol 674 (Scheme LXX). An analogous sequence transformed 675 to 676 and set the stage for final transformations which were patterned after earlier work. 

This procedure is a modification of one described by Cortese.4 Allyl chloride is employed rather than allyl bromide because of its low cost. Biallyl has been prepared by the action of sodium 6 or aluminum 6 on allyl iodide from allyl mercuric iodide by dry distillation 7 or by the action of potassium cyanide solution 8 and by the action of magnesium on allyl bromide,4-9 on allyl chloride,4-10 on allyl iodide,11 or on 1,2,3-tribromopropane.12... 

A related synthesis of 12-acetoxysinularene (122) differs in that the magnesium-ene unit is part of the noibomene skeleton which carries the enophilic chain at C-2 (Scheme 26). Hence, by reversing the relative position of the reaction partners the bond between C-5 and C-6 was closed in the key step (119) —> (120) with simultaneous formation of both the C-7A -15 methylene group and the C-12 Mg functionality. Accordingly, one synthetic operation provided alcohol (121) in 62% yield from allyl chloride (118) (again the initial cis relation of C-12/C-7 was altered thereafter by an epimerization at C-5). 

Figure 14 Allylic Grignard reagent formed from the corresponding allyl chloride using magnesium activated by the metal atom vaporization method.

The study of the addition time of aryl magnesium bromides on allyl chlorides shows that the addition time plays a significant role on the Sn2/Sn2 ratio [48] since a fast addition (1 min) gave a 60 40 ratio and a slow addition (10 hr) 27 73. 

CARBONIC ACID, LITHIUM SALT (554-13-2) LijCOj Aqueous solution is an organic base. Violent reaction with acids. Inconpatible with fluorine, germanium, lead diacetate, magnesium, mercurous chloride, silicon, silver nitrate, titanium. Aqueous solution incompatible with organic anhydrides, acrylates, alcohols, aldehydes, alkylene oxides, substituted allyls, cellulose nitrate, cresols, caprolactam solution, epichlorohydrin, ethylene dichloride, isocyanates, ketones, glycols, nitrates, phenols, vinyl acetate. Exothermic decomposition with maleic anhydride. Corrodes aluminum, copper, zinc in the presence of moisture. On small fires, use any extinguishing agent. 

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