means of combating insects of the order akarina and plant pathogens of nematodes

摘要

New cpds. of formula (I): (where R1 is 1-5C alkyl; R2 is 1-5C alkyl (opt. substd. by 1-5C alkylthio), 3-5C alkenyl or 3-5C alkynyl; R3-R12 are each H, halogen or 1-5C alkoxy) are pref. prepd. by reacting the corresp. diphenylmethyl halide with MS(O)P(SR2)OR1 (where M = alkali metal).