Organic pesticides. XV. Synthesis and insecticidal activity of some compounds containing phosphorus and fluorine

Forty new organofluorine compounds, containing phosphorus, have been synthesised as potential pesticides. The compounds include esters of O,O‐dialkyl phosphoramidic acids of the type (RO)2P(O)NHAr; thioesters of O,O‐dialkyl thiophosphoramidic acids of the type (RO)2P(S)NHAr; esters of O,O‐dialkyl phosphonic acid of the type (RO)2P(O)Ar and esters of O,O‐dialkyl thiophosphonic acid (RO)2P(S)OAr. All the compounds have been screened for their insecticidal activity against adult cockroaches (Periplanata americana) and a few show appreciable activity.