10100-95-5Relevant articles and documents
IODINE MEDIATED SYNTHESIS OF ALKYL TERTIO-ALKYL ETHERS
Jenner G.
, p. 2445 - 2448 (1988)
Mixed alkyl t-alkyl ethers have been prepared by the selective coupling of the alcohol precursors.Dehydration was promoted by iodine under hydrogen pressure at 100 deg C.
Kinetics of the reactions of tert-butanol with C2-C5 alcohols on sulfo cation exchangers
Golovanov,Pisareva,Levshenkov
, p. 179 - 183 (2013)
The kinetics of etherification of tert-butanol with aliphatic alcohols on gel KU-2×8 and macroporous KU-23 sulfo cation exchangers was studied. The first order of reaction with respect to tert-butanol and the -SO3H groups of a catalyst was established. The activation energy of the process observed on KU-2×8 was 60-95 kJ/mol. It was shown that the etherification of tert-butanol on KU-2×8 occurred in a surface layer. The reactivity of primary alcohols introduced into the reaction with tert-butanol increased with their molecular weights (C2-C5). The rate of reaction with secondary alcohols was lower than that with primary alcohols.
Investigation of the equilibria of the reaction: CH3(CH2)4OH + (CH3)2C:CH2 = CH3(CH2)4OC(CH3)3
Rozhnov, A. M.,Barkov, V. I.,Sharonov, K. G.,Tsvetkov, V. S.
, p. 327 - 333 (1990)
Equilibria have been studied of the reaction of synthesis of amyl t-butyl ether (ATBE) from n-pentan-1-ol and 2-methylpropene in the liquid (313 to 413 K) and gas (399 to 447 K) phases.It has been found that in the liquid phase (ATBE + n-pentan-1-ol + 2-methylpropane) is non-ideal.Its mole-fraction equilibrium product Kx depends on the composition of the reaction mixture at constant temperature.With n(C5H11OH)/n 2 in the starting mixture, Kx is approximately constant.It has been shown that the values of Kx found for n(C5H11OH)/n =4 can be used for the establishment of the enthalpy of reaction without corrections for non-ideality of the mixture.An ebulliometric method was used to find the vapour pressure of ATBE. ΔrHm0 = -(67.09 +/- 4.94) kJ*mol-1 and ΔrSm0 = -(173.1 +/- 11.6) J*K-1*mol-1 were found for the reaction: CH3(CH2)4OH + (CH3)2C:CH2 = CH3(CH2)4OC(CH3)3 in the gas phase for T = 423 K.The following values of thermodynamic quantities of ATBE have been found both from chemical equilibria and (p,T) results: ΔfHm0(298.15 K,g) = -(380.6 +/- 6.8) kJ*mol-1; ΔvapHm(298.15 K) = (46.89 +/- 0.99) kJ*mol-1, and ΔvapHm = (39.1 +/- 3.1) kJ*mol-1 at the normal boiling temperature, 419.156 K.
A convenient synthesis of tert-butyl ethers under microwave condition
Mahammed,Keshava Murthy,Mohana Raju
, p. 575 - 578 (2008/09/20)
Synthesis of tert-butyl ethers from various alcohols and substituted phenols can be achieved using tert-butyl bromide in the presence of basic lead carbonate as a catalyst under microwave irradiation in absence of solvent. The catalyst is easily recovered via filtration and reused up to three times without appreciable loss of activity.
