Synthesis, Spectroscopic Studies and Antifungal Activity of <i>O</i>-Alkyl or <i>O</i>-Aryl Trithiophosphate Derivatives of Trimethylaminoborane
作者:Kiran Sankhala、Alok Chaturvedi
DOI:10.1080/10426507.2012.685995
日期:2012.10.1
In this work, we report on the synthesis, characterization, and antifungal activities of new boron derivatives of O-alkyl or O-aryl trithiophosphate of the type ROP(S) S-2[BS2P(S)OR](2)center dot 2NMe(3) (R = Me, Et, Pr-i, Bu-i, Ph, CH2Ph). They were synthesized by the reaction of trimethylaminoborane with O-alkyl or O-aryl trithiophosphate in 2: 3 molar ratio in dried and distilled benzene. The newly synthesized derivatives are light yellow viscous liquids, monomer, and soluble in common organic solvents. These compounds have been characterized by elemental analysis, molecular weight determinations, and spectroscopic (IR, H-1, B-11, and P-31 NMR) studies which are consistent with four-coordinated boron and bidentate behavior of the trithiophosphate moiety. It is observed that when these derivatives are applied in the form of dilute solution in ethanol of various concentrations, they show their effectiveness against powdery mildew disease at a fixed interval of days.Supplemental materials are available for this article. Go to the publisher's online edition of Phosphorus, Sulfur, and Silicon and the Related Elements to view the free supplemental file.