The discovery of a predominant axial conformation in 2-[l,3]dithianyldiphenylphosphine oxide (1) was reported recently.1 This finding was remarkable from several points of view: (1) it constituted the first account of the existence of an anomeric interaction between second-row elements sulfur and phosphorus,2 (2) unlike other reported examples
Aus 1,3‐Dithian (I) erhält man nach Metallierung, Umsetzung mit Diphenylchlorphosphin und Oxidation das entsprechende Phosphinoxid (II), dessen Konformation diskutiert wird, u.a. im Vergleich zu den strukturbekannten.
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