Ethyl aluminium dichloride

Distd from excess dry NaCI (to remove ethyl aluminium dichloride) in a 50-cm column containing a heated nichrome spiral. 

Finally, in an aromatic series, the effect of allyl chloride on benzene or toluene in the presence of ethyl aluminium dichloride (Friedel-Crafts catalysts) at -70 C is very violent and has led to a large number of accidents. It is thought that the exothermicity of the reaction below (in the case of benzene) caused these accidents, but one can not exclude a violent polymerisation of allyl chloride. 

The Diels-Alder reaction of enantiomerically pure chiral aery he esters with cyclopen-tadiene leads to a pair of diastereomers. Their ratio depends strongly on the choice and amount of Lewis acid catalyst (Scheme 8)117. While titanium tetrachloride leads preferentially to the (2A )-diastercorner with high selectivity, ethyl aluminium dichloride gives the (2S )-diastereomer in only 56% de. 

Diethyl aluminium chloride [96-10-6] M 120.6, m -75.5", b 106.5-108"/24.5mm, d 0.96. Distd from excess dry NaCl (to remove ethyl aluminium dichloride) in a 50-cm column containing a heated nichrome spiral. 

Als Friedel-Crafts-Katalysatoren konnen Aluminiumtrichlorid, -tribromid oder Ethyl-aluminium dichlorid eingesetzt werden. Es iiberrascht, daB letzteres nicht ethylierend auf Thiophosphorsaure-chlorid einwirkt, sondern unter den hier angewandten Bedingungen als Katalysator filr die elektrophile Aromaten-Substitution wirkt. Antimon(V)-chlorid wirkt chlorierend auf den Aromaten ein und ist ebenso als Katalysator ungeeignet wie Zink(II)-chlorid, Eisen(Ill)- oder Titan(IV)-chloridS38. 

Ring-opening polymerization of norbornene with metathesis catalysts and with ethyl aluminium dichloride, in the absence of transition metals, has been reported by Ivin et The formation of ring-opened syndiotactic and... 

The Phillips dimerization process [4,5] catalytically converts ethylene to butene-1 utilizing a nickel based catalyst system consisting of ethyl aluminium dichloride and bis(tri-n-butyl phosphine) nickel dichloride prepared in dry n-pentane. The process consists of three steps, a reaction step and two quench steps. In the reactor section, ethylene is fed to the reactor where it comes in contact with a mixture of diluent butenes and the two catalyst... 

K. S. Minsker et al. Alkylation of benzene by propylene in the presence of activated ethyl-aluminium dichloride. Chem. Abs., 1978,88,37 335. 

C uniformly labelled benzenesulphonic acid 20 and 14C(U)benzenesulphonyl chloride 21 have been synthesized according to equations 9 and used in the production of compound 22, a soil insecticide25. 14C(U) benzene was sulphonated with excess of 100% sulphuric acid. The intermediate product 20 reacted with thionyl chloride producing 14C(U)benzenesulphonyl chloride 21. The latter, treated with lithium aluminium hydride, gave the dithiophenyl lithium aluminium dichloride complex26 which in turn, reacted with O-ethyl-ethylphosphonochloridothioate yielding 22, in 95% radiochemical purity. 

Supposition 1. In the paper in which we first described the self-ionisation of titanium tetrachloride in methylene dichloride or ethyl chloride, we also showed that the conductivity measurements on aluminium bromide solutions available at that time could be explained by a self-ionisation of the type... 

The reaction of imines with 2-pyridyl thioesters in the presence of aluminium tribromide or ethylaluminium dichloride afforded /ra r-3,4-disubstituted azetidin-2-ones < 1996T2583>. Similar stereoselective addition of silylketene thioacetals to imines is known in the presence of Lewis acids <1996T2573>. An indium-mediated reaction of ethyl bromoacetate with imines yielded 3-unsubstituted azetidin-2-ones in reasonable yields (Equation 195) <2000J(P1)2179>. 

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