Chemistry of the Aliphatic Esters of Thiophosphoric Acids. I

Mastin, T. W.; Norman, George R.; Weilmuenster, E. A.

doi:10.1021/ja01226a014

Cited by 86 publications

(16 citation statements)

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“…1 H NMR Spectra (Table 2) of these derivatives show the characteristic resonance due to alkoxy and phenyl protons. A sharp singlet at 2.5-3.0 ppm characteristic for SH protons in the parent O-alkyl trithiophosphates 25,26 is absent in the spectra of the newly synthesized derivatives. A singlet is observed at 2.67-2.88 ppm, which is due to the N-methyl protons.…”

Section: H Nmr Spectramentioning

confidence: 87%

Synthesis, Spectroscopic Studies and Antifungal Activity of O-Alkyl or O-Aryl Trithiophosphate Derivatives of Trimethylaminoborane

Sankhala

Chaturvedi

2012

Phosphorus, Sulfur, and Silicon and the Related Elements

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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 [BS 2 P(S)OR] 2 ·2NMe 3 (R = Me, Et, Pr i , Bu i , Ph, CH 2 Ph). 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, 1 H, 11 B, and 31 P 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.

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Section: H Nmr Spectramentioning

confidence: 87%

Synthesis, Spectroscopic Studies and Antifungal Activity of O-Alkyl or O-Aryl Trithiophosphate Derivatives of Trimethylaminoborane

Sankhala

Chaturvedi

2012

Phosphorus, Sulfur, and Silicon and the Related Elements

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“…[26] This shows notable shifting ( = 64.5 cm −1 ) towards lower frequencies in the open chain, but in the cyclic chain there is no shift observed with respect to its position in the free acids and a new band is observed in the region 377-369 cm −1 due to Se-S vibrations. [27,28] …”

Section: Ir Spectramentioning

confidence: 99%

“…Dialkyl and alkylene dithiophosphoric acids were prepared by the reaction of phosphorus pentasulfide and alcohols in a 1 : 4 ratio, and in a 1 : 2 ratio with glycols as described in the literature. [18,28] Sulfur was determined by Messenger's method as barium sulfate. Selenium was determined by iodometric titration.…”

Section: Structural Elucidationmentioning

confidence: 99%

Synthesis and antimicrobial studies of bis(O,O′‐dialkyl and alkylene dithiophosphoric acid) adducts of diphenyl diselenide

Khaldy

Abu-Shanab

Alkhair

2011

Applied Organom Chemis

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“…The additive O,O-di-(AEO-3) phosphorodithioic acid (DAPA) was prepared in our laboratory according to Refs [12,13], and the pathway is outlined in Fig. 1.…”

Section: Experimental Preparation and Characterization Of The Additivementioning

confidence: 99%

XANES characteristics of tribofilms generated by dithiophosphate additive in water at different test temperatures and durations

Qiao

et al. 2009

Surface & Interface Analysis

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Water-based lubricants and metal-working fluids are becoming more and more popular in modern manufacturing due to environmental concerns. Owing to the poor lubricating properties offered by pure water, additives are generally needed to improve the antiwear and extreme pressure properties. In the present work, the tribological behaviors of synthesized additives in water-based lubricants are studied for different durations and temperatures by a four-ball machine, and the worn surfaces were analyzed by scanning electron microscopy (SEM) and X-ray absorption near-edge structure (XANES) spectroscopy. It was found that the tribological properties changed with the duration and temperature, and the tribofilms mainly consisted of an adsorbed layer and a tribochemical layer. The compositions of tribofilms also changed with duration and temperature, and the different compositions of tribofilms would result in different tribological properties accordingly.

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Chemistry of the Aliphatic Esters of Thiophosphoric Acids. I

Cited by 86 publications

References 0 publications

Synthesis, Spectroscopic Studies and Antifungal Activity of O-Alkyl or O-Aryl Trithiophosphate Derivatives of Trimethylaminoborane

Synthesis, Spectroscopic Studies and Antifungal Activity of O-Alkyl or O-Aryl Trithiophosphate Derivatives of Trimethylaminoborane

Synthesis and antimicrobial studies of bis(O,O′‐dialkyl and alkylene dithiophosphoric acid) adducts of diphenyl diselenide

XANES characteristics of tribofilms generated by dithiophosphate additive in water at different test temperatures and durations

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