Abstract
A series of unsaturated f -hydroxy phosphonates were synthesized by the addition reactions of dialkyl phosphites with 5-aryl-3-methyl-2E, 4E-pentadienaldehydes. The structures of all new compounds have been confirmed by 1 H NMR, 31 P NMR, and IR spectroscopy and by elemental analysis or MS. The bioassays showed that some of these compounds exhibit certain inhibitory activity on the elongation of wheat coleoptile.
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