The reactions of tetraphosphorus decasulfide 1 with trialkyl borates 2a,b a
nd O-isobutyl diphenylborate 2c were studied. On the basis of these studies
, a novel method of synthesizing S-boron derivatives of dithiophosphoric ac
ids was developed. The use of low frequency ultrasonic irradiation (22 kHz,
power 130 W) leads to a reduction in temperature and time required for com
pletion of the reactions studied. (C) 2000 John Wiley & Sons, Inc.