Bm. Choudary et Y. Sudha, CHEMOSELECTIVE THIOACETALISATION OF ALDEHYDES CATALYZED BY FE3-MONTMORILLONITE(), Synthetic communications, 26(16), 1996, pp. 2993-2997
Aldehydes were cleanly and selectively converted to the corresponding
dithioacetals almost quantitatively with catalytic amounts of Fe3+-exc
hanged montmorillonite (Fe3+-mont) even in the presence of ketones.