Ethylene derivs synthesis

Sodium hydride Homer synthesis Ethylene derivs. from 0X0 compds. and phosphonic acid esters... 

Reactions with sodium hydride in dimethyl sulfoxide Wittig synthesis Ethylene derivatives... 

Other uses of ethylene dichloride include its formulation with tetraethyl and tetramethyl lead solutions as a lead scavenger, as a degreasing agent, and as an intermediate in the synthesis of many ethylene derivatives. 

Alkylation of aluminum with ethylene yields products that find application as initiators and starter compounds in the production of a-olefins and linear primary alcohols, as polymerization catalysts, and in the synthesis of some monomers like 1,4-hexadiene. Triethyl aluminum [97-93-8], A1(C2H5)3, is the most important of the ethylene-derived aluminum alkyls. 

Dichloroacetylene is rather endothermic (ALtf (g) +149.4 kJ/mol, 1.57 kJ/g) and a heat-sensitive explosive gas which ignites in contact with air. However, its azeotrope with diethyl ether (55.4% dichloroacetylene) is not explosive and is stable to air [ 1 ] [2]. It is formed on catalysed contact between acetylene and chlorine, or sodium hypochlorite at low temperature or by the action of alkali upon polychloro-ethane and -ethylene derivatives, notably trichloroethylene [3]. A safe synthesis has been described [4], Ignition of a 58 mol% solution in ether on exposure to air of high humidity, and violent explosion of a cone, solution in carbon tetrachloride shortly after exposure to air have been reported. Stirring the ethereal solution with tap water... 

However, Mannich bases arc more frequently employed as modifiers of polymeric products, as they arc involved in the. synthesis of derivatives having structures of type 392 or 393 (Fig. 153), as is evidenced by the epoxy oligomers 399, obtained from phenolic alkanolamines and ethylene oxide,in which the polycthcr chain involves both the phenolic and hydroxyalkyl moieties. 

Schutz and Ugi129 developed the synthesis of penam derivatives (155 R = Me) - (159 R4 = Bu ). This penam synthesis was improved by the use of R = All and R4 = All or CHzCChEt.122 In these recent 3-lactam syntheses the Ugi reaction was executed in trifluoroethanol, a magic solvent for such conversions.73125 In a recent carbacephem synthesis ethylene glycol/glycerol gave very good results as the solvent."811... 

Synthesis of aliphatic nitro compounds from ethylene derivatives... 

Synthesis of hydrocarbons from ethylene derivatives Alkylation of thiophenes with olefins... 

Carboxylic acids from ethylene derivatives C C —>- CHC-COOH Synthesis with addition of 1 C-atom... 

Anthracene homologs can also be prepared in this way, by using derivatives of cyclohexadiene. Further, 1,4-naphthoquinone can be used as starting material (for a single diene synthesis) and the ethylene bridge may be substituted without destroying the ability of the product to split off the ethylene derivative. 

Generally, 1,2-disubstituted ethylene derivatives have only a small tendency for radical homopolymerization. An exception is vinylene carbonate (VCA) which can be easily polymerized by chemical as well as radiation initiation. However, the reaction is strongly affected by traces of impurities formed during the synthesis. Inhibition experiments are discussed with regard to the nature of the inhibiting impurities. The copolymerization behavior of VCA with some halo-substituted olefins was studied with chlorotrifluoroethylene (CTFE), a statistical copolymer with a slight tendency for alternation was obtained. 

Aluminum chloride Synthesis of ethylene derivatives from 0X0 compounds... 

Triphenylphosphinelethylene oxide Ethylene derivatives from halides and 0x0 compounds Shortened Wittig synthesis... 

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