α-HYDROXYPHOSPHINOXIDE UND -SULFIDE DURCH ADDITION VON DIMETHYLPHOSPHINOXID BZW. -SULFID AN ALDEHYDE UND KETONE

Abstract

Me₂P(:O)H and Me₃P(:S)H reacted with several aldehydes with formation of the corresponding tertiary phosphine oxides and sulfides 1-5. While the phosphoryl compounds 1 and 3 show intramolecular hydrogen bridges of the type P[dbnd]O … H—O (IR spectroscopy), no analogous bridges were observed in the case of the thiophosphoryl compounds 2,4 and 5. Me₂P(:O)H also reacted with diacetylmonoxime to give the mono-adduct 6 and with 1,1′-diacetylferrocene to give the di-adduct 7. In both cases the addition took place only in the presence of KO'Bu (6: excess KO'Bu, 7: catalytic amounts).

Key Words:

• Dimethylphosphine oxide
• -sulfide
• 1,1′-Diacetylferrocene
• addition reactions