Cc. Tang et al., STUDIES ON THE SYNTHESIS OF S-ALKYL-O-POL YCHLOROPHENYL THIOPHOSPHORIC(-NIC) ACID-DERIVATIVES AND THEIR FUNGICIDAL ACTIVITIES, Gaodeng xuexiao huaxue xuebao, 17(3), 1996, pp. 414-418
The isomerization/chlorination of O,O-dialkyl thiophosphate (-onate) 1
with phosphorus oxychloride gives S-alkyl thiophosphorochloride (-noc
hloride) 2, then, the reaction of compounds 2 with polychlorophenol in
the presence of triethlamine afford the title compounds 4. Compounds
4 have also been prepared by using the traditional method, thus, the r
eaction of S-alkyl thiophosphorodichloride 5 with polychlorophenol, th
en with another nucleophile R'H in the presence of triethylamine can a
lso give the title compounds (4). The results of the tests in the fung
icidal activity towards the twelve plant disease fungus show that the
twenty-eight compounds 4 prepared possess a satisfactory or excellent
fungicidal activity.