134878-50-5Relevant articles and documents
Kinetics and mechanism of monomolecular heterolysis of commercial organohalogen compounds: XLIII. Solvent effect on activation parameters of dehydrochlorination of 3-chloro-3-methylbut-1-ene. Correlation analysis of solvation effects
Ponomarev,Zaliznyi,Dvorko
, p. 1204 - 1214 (2008/02/12)
The influence of temperature on the rate of dehydrochlorination of 3-chloro-3-methylbut-1-ene in 17 aprotic and 13 protic solvents, ν = k[C 5H9Cl], was studied by the verdazyl method. In aprotic solvents, the electrophilicity, ionizing power, and cohesion of solvents decrease ΔG ≠ by increasing ΔS ≠. The nucleophilicity and polarizability increase both ΔH ≠ and ΔS ≠ to equal extent and therefore do not affect ΔG ≠. In protic solvents, the solvent nucleophilicity increases ΔH ≠ to a greater extent than ΔS ≠, and the overall effect of the nucleophilic solvation is small and negative.
Kinetics and mechanism of monomolecular heterolysis of commercial organohalogen compounds: XLI. Solvent effect on the rate of 3-methyl-3-chloro-1- butene solvolysis. Correlation analysis of solvation effects and role of solvent nucleophilicity
Ponomarev,Zaliznyi,Dvorko
, p. 1430 - 1436 (2008/02/03)
The kinetics of 3-methyl-3-chloro-1-butene solvolysis at 25°C in MeOH, EtOH, BuOH, i-BuOH, PentOH, 2-PrOH, 2-BuOH, HexOH, OctOH, t-BuOH, t-PentOH, cyclohexanol, and allyl alcohol was studied by the verdazyl method; v = k[C 5H9Cl], SN1 + E1 mechanism. The reaction rate shows a satisfactory correlation with the parameter of the solvent ionizing power E T and is independent of the solvent nucleophilicity. 2005 Pleiades Publishing, Inc.
A New Synthesis of Hindered Unsymmetrical t-Alkyl Ethers
Masada, Hiromitsu,Gotoh, Hidenori,Ohkubo, Makoto
, p. 1739 - 1742 (2007/10/02)
The unusual Williamson reactions of t-butyl and t-pentyl halides with lithium t-alkoxides or with t-alkyl alcohols and amines were carried out at 20-50 deg C.Some of the nucleophilic substitution products were new unsymmetrical ethers: t-butyl t-pentyl ether, t-butyl 1,1-dimethyl-2-propenyl ether, t-butyl 1,1-dimethyl-2-propynyl ether, 1,1-dimethyl-2-propynyl t-pentyl ether, and t-butyl 1-ethyl-1-methyl-2-propynyl ether.
REACTIONS OF α,α-DIMETHYLALLYL ALCOHOL WITH POSITIVE CHLORINATION REAGENTS: SYNTHESIS OF 1-CHLORO-2,3-EPOXY-3-METHYLBUTANE
Bentley, Stuart,Goosen, Andre,Laue, Hugh A. H.,Taljaard, Benjamin
, p. 1566 - 1590 (2007/10/02)
Various approaches to the synthesis of the title compound, 1-chloro-2,3-epoxy-3-methylbutane, via the chlorination reactions of α,α-dimethylallyl alcohol have been followed.Attempted one-step synthesis of the epoxide from the substrate alcohol with either highly alkaline sodium hypochlorite, or t-butyl hypochlorite in the absence of solvent, gave mediocre yields of epoxide, accompanied by a variety of chlorinated products via mechanistic pathways proposed to involve neighbouring group participation (NGP) of the hydroxyl moiety.Good overall yields of epoxide were obtained in a two step synthesis involving chlorination of the alcohol with chlorine gas in solvent, followed by treatment of the chlorohydrin product with either base or dry silica gel.