Die Reaktion von Salicylaldehyd (I) mit den sauren Phosphiten (II) in Gegenwart von Natriumalkoholat (Abramov‐Reaktion) führt zu den Phosphonsäureester‐Salzen (III), in Gegenwart von tertiärem Amin zu den Phosphonsäureestern (IW.
Reaction of the diacetylphenyl silyl ether (II) with the silyl phosphite (Ia) gives the bis‐adduct (IIIa) which is not isolated but decomposes during distillation, producing the benzoxaphospholene (IV).
Stable host-guest complexes of β-cyclodextrin with some aliphatic dicarboxylic acids have been synthesized, and their composition has been determined by 1 H NMR spectroscopy.
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