P-Diol monoethers

Epoxide opening. Optically active trans-1,2-diol monoethers are readily obtained by the catalyzed reaction of epoxides with alcohols in the presence of the BINOL complexes and molecular sieves 4A. Similarly, p-hydroxy sulfides are formed. ... [Pg.24]

Lithium tetrahydridoaluminate I lithium iodide 5 11-1,3-Diol monoethers from p-alkoxyketones... [Pg.306]

Rates of BTPPD oxidation of vicinal and non-vicinal diols (and one of their monoethers) in DMSO/TsOH to the corresponding hydroxyaldehyde are first order in BTPPD, second order in diol and H+, and correlated with Taft s Ea values with negative p. A symmetrical transition state in the rate-determining step is suggested from the temperature dependence of the kinetic isotope effect (kjj/kp = 6.61 using [l,l,2,2- H4]ethanediol). The cation-solvating power of the solvents is indicated from the analysis of the solvent effect in ethanediol. A mechanism involving formation of chromate ester in a pre-equilibrium is postulated. ... [Pg.103]

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