Mesitylenesulphonyl chloride (trimsyl chloride) has been shown to react more selectively with one hydroxy-group of a vicinal diol than does toluene-p-sulphonyl chloride. Vicinal trans-bistrimsyloxy-systems do not form oxirans on treatment with methanolic sodium methoxide, in contrast to the analogous bistosyloxy-systems.
S. E. Creasey and R. D. Guthrie, J. Chem. Soc., Perkin Trans. 1, 1974, 1373 DOI: 10.1039/P19740001373
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