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Diethylene glycol dichloride

Upon careful analysis, the product was found to be a macrocycle containing two benzene rings, six oxygen atoms, and ethylene spacers between the oxygens. It had formed through the reaction of diethylene glycol dichloride and catechol. Pedersen had known that the 2-(hydroxyphenoxy)tetrahydropyran was contaminated with about 10% of the unprotected catechol but had decided to proceed with the reaction in any case. Following his chance result Pedersen carefully repeated the experiments... [Pg.708]

Following his accidental discovery of dibenzo-18-crown-6, Pedersen optimized its synthesis from catechol and diethylene glycol dichloride in n-butanol. A solution of... [Pg.710]

ETHYL BENZENE ETHYL BROMIDE ETHYL CHLORIDE ETHYL ETHER ETHYLENE CHLOROHYDRIN ETHYLENE DIAMINE ETHYLENE DIBROMIDE ETHYLENE DICHLORIDE ETHYLENE GLYCOL ETHYLENEIMINE ETHYLENE OXIDE DIETHYL KETONE DIETHYLENE GLYCOL GLYCOL ETHERS, ESTERS MEA, DEA. TEA VINYL ACETATE POLYMERS. COPOLYMERS... [Pg.518]

Hexatetraene. This new CgHg hydrocarbon (5) has been prepared by reduction of the mixture of dichlorides, (2)-(4), obtained from (1) as shown, with zinc in diethylene glycol dibutyl ether at 70°. The product was identified as the adduct (6) with tetracyanoethylene (TCNE). [Pg.217]

DIethylene Glycol Methylene Bromide Propylene DIchloride... [Pg.548]

Ethylene dichloride. See Ethylene dichloride Ethylene diglycol. See Diethylene glycol Ethylene diglycol monoethyl ether See Ethoxydiglycol Ethylene dihydrate. See Ethylene glycol Ethylene dihydrogenated tallowamide CAS 68647-78-9 EINECS/ELINCS 271-973-9... [Pg.2121]

DIethylene glycol phenyl ether 104-74-5 Ethylene dichloride 107-13-1... [Pg.2931]

Penta- and heptaethylene glycols were prepared by condensation of the monosodium salts of mono- and diethylene glycols, respectively, with the dichlorides of the triethylene glycol [4]. [Pg.392]

Pure, discrete diethylene, triethylene and tetraethylene glycols are all commercially available from a variety of sources. Pentaethylene glycol and longer polyoxyethylene glycols are generally prepared by condensation of two equivalents of a shorter glycol with a diol dichloride or ditosylate. Such methods have been reported by Pedersen", Cornforth , and Krespan . The approach is illustrated in Eq. (7.1), below. [Pg.312]


See other pages where Diethylene glycol dichloride is mentioned: [Pg.1]    [Pg.20]    [Pg.871]    [Pg.708]    [Pg.710]    [Pg.1]    [Pg.20]    [Pg.871]    [Pg.708]    [Pg.710]    [Pg.449]    [Pg.258]    [Pg.258]    [Pg.494]    [Pg.1318]    [Pg.50]    [Pg.487]    [Pg.40]    [Pg.505]    [Pg.118]    [Pg.5707]    [Pg.125]    [Pg.367]    [Pg.120]   
See also in sourсe #XX -- [ Pg.20 ]




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