3270-86-8

Magnetic nanoparticles of CuFe2O4 were applied as catalyst system for one-pot thiophosphate synthesis via the reaction of aryl sulfonyl chlorides with H-phosphonates under conventional heating conditions. This is an extremely efficient and green method for thiophosphate synthesis under base- and solvent-free conditions. Various thiophosphates were obtained in good to excellent yields under the optimized reaction conditions in a short time. The catalyst can be easily recycled from the reaction by an external magnetic field and reused for the next run. In this study, TD-DFT B3LYP/6-31 + G(d) calculations are in good accord with the experimental results. A comparison between experimental and theoretical UV-vis absorption spectra of the thiophosphate 3k has been carried out; and a small hypsochromic shift (only ～ 2 nm) was displayed at maximum absorption. The aim of this work is to investigate the best method and basis set for thiophosphate compounds; therefore, predictions for these compounds can be performed in theoretical studies.

Exploring new catalysts for efficient organic synthesis is among the most attractive topics in chemistry. Here, using Ni(OAc)2/LA as catalyst (LA: Lewis acid), a novel catalyst strategy was developed for oxidative coupling of thiols and phosphonates to phosphorothioates with oxygen oxidant. The present study discloses that when Ni(OAc)2 alone was employed as the catalyst, the reaction proceeded very sluggishly with low yield, whereas adding non-redox-active metal ions such as Y3+ to Ni(OAc)2 dramatically promoted its catalytic efficiency. The promotional effect is highly Lewis acidity dependent on the added Lewis acid, and generally, a stronger Lewis acid provided a better promotional effect. The stopped-flow kinetics confirmed that adding Y(OTf)3 can obviously accelerate the activation of thiols by Ni(II) and next accelerate its reaction with phosphonate to generate the phosphorothioate product. ESI-MS characterizations of the catalyst disclosed the formation of the heterobimetallic Ni(II)/Y(III) species in the catalyst solution. Additionally, this Ni(II)/LA catalyst can be applied in the synthesis of a series of phosphorothioate compounds including several commercial bioactive compounds. This catalyst strategy has clearly supported that Lewis acid can significantly improve the catalytic efficiency of these traditional metal ions in organic synthesis, thus opening up new opportunities in their catalyst design.

The invention discloses a synthetic method for phosphorothiolate compounds, and the reaction steps of the synthetic method are as follows: dissolving diaryl disulfide in the solution, taking oxygen inthe air as an oxidizing agent, stirring at room tempera

A Cu-BTC@Fe3O4 composite was prepared and exhibited good catalytic activity toward the synthesis of S-aryl phosphorothioates. The three-component reaction involved the coupling of in situ generated aryl diazonium salts from aniline, R2P(O)H, and sulfur powder, allowing the facile and direct formation of C(aryl)-S-P bonds. A broad scope of substrates survived the reaction conditions to afford the corresponding products in good to excellent yields. Moreover, this heterogeneous catalyst could be magnetically recovered and reused without significant loss of its activity after six cycles.

Convenient, practical and economical phosphorylation of thiols has been achieved via halogen- and metal-free K2CO3-promoted aerobic oxidative cross-coupling of trialkyl phosphites, dimethyl phenylphosphonite, or methyl diphenylphosphinite with thiophenols using air as the oxidant at room temperature. This transformation provides a straightforward route to the construction of phosphorus-sulfur bonds with wide functional group compatibility, which affords phosphorothioates in up to 94% yield.

Background: Although the exploitation of facile and efficient preparation for S-aryl phosphorothioates has gained considerable interest, there is still great demand for the development of a direct, convenient and especially environmentally benign protocol

An efficient Cs2CO3-catalyzed oxidative coupling of thiols with phosphonates and arenes that uses molecular oxygen as the oxidant is described. These reactions provide not only a novel alkali metal salt catalyzed aerobic oxidation, but also an efficient approach to thiophosphates and sulfenylarenes, which are ubiquitously found in pharmaceuticals and pesticides. The reaction proceeds under simple and mild reaction conditions, tolerates a wide range of functional groups, and is applicable to the late-stage synthesis and modification of bioactive molecules.

The invention discloses a having the general formula (III) of the thiophosphate synthetic method of compound, the purpose is to provide a novel, condition is simple, easy to industrial production of the thiophosphate synthetic method of compound. The method is to have the general formula (I) of the organophosphorus oxygen apperception compound having the general formula (II) with a mercaptan or phenyl-sulfhydryl apperception compound mixed, under the effects of catalyst, obtained by the reaction of the formula (III) of the thiophosphate compound. The method of the invention, can be cheap efficient synthesis of thiophosphate compounds, in actual production will have extensive application prospect. (by machine translation)

Green methods for the synthesis of S-aryl phosphorothioates have been developed based on copper-catalyzed multicomponent reactions involving diaryliodonium/arenediazonium salts, elemental sulfur, and R2P(O)H compounds. Most target products are obtained with these two methods in good to high yields at room temperature. These transformations allow the direct formation P-S and C-S bonds in one reaction.

A Pd-catalyzed dehydrogenative phosphorylation of thiols is developed. A variety of thiols dehydrogenatively couple readily with all three kinds of P(O)-H compounds, i.e., H-phosphonates, H-phosphinates, and secondary phosphine oxides, providing a general access to the valuable phosphorothioates including the P-chiral compounds. A plausible mechanism is proposed.