85873-18-3

Upstream product

• 1493-13-6 trifluorormethanesulfonic acid 
• 603-35-0 triphenylphosphine 

Relevant academic research and scientific papers

Reaction of methyl 2-methylidene-3-oxolup-20(29)-en-28-oate with triphenylphosphonium trifluoromethanesulfonate

Phosphorylation of methyl 2-methylidene-3-oxolup-20(29)-en-28-oate with triphenylphosphonium trifluoromethanesulfonate in methylene chloride at 20°C afforded 90% of a γ-oxoalkylphosphonium salt containing a terpenoid fragment, [28-methoxy-3,28-dioxolup-20(29)-en-2-ylmethyl]triphenylphosphonium trifluoromethanesulfonate, as a mixture of two epimers (2S/2R) at a ratio of 2: 1.

Phosphonium salts with a dihydroxynaphthyl substituent: versatile synthesis and evaluation of antimicrobial activity

(1,4-Dihydroxynaphthalen-2-yl)phosphonium salts were obtained by reaction of P–H phosphonium salts with substituted 1,4-naphthoquinones. Some representatives of this series possess high activity against Gram-positive bacteria (Staphylococcus aureus ATCC 209p, Bacillus cereus ATCC 8035).

Sequential Selective C?H and C(sp3)?+P Bond Functionalizations: An Entry to Bioactive Arylated Scaffolds

Organophosphonium salts containing C(sp3)?+P bonds are among the most utilized reagents in organic synthesis for constructing C?C double bonds. However, their use as C-selective electrophilic groups is rare. Here, we explore an efficient and general transition-metal-free method for sequential chemo- and regioselective C?H and C(sp3)?+P bond functionalizations. In the present study, C?H alkylation resulting in the synthesis of benzhydryl triarylphosphonium salts was achieved by one-pot, four-component cross-coupling reactions of simple and commercially available starting materials. The utility of the resulting phosphonium salt building blocks was demonstrated by the chemoselective post-functionalization of benzylic C(sp3)?+PPh3 groups to achieve aminations, thiolations, and arylations. In this way, benzhydrylamines, benzhydrylthioethers, and triarylmethanes, structural motifs that are present in many pharmaceuticals and agrochemicals, are readily accessed. These include the synthesis of two anticancer agents from simple materials in only two to three steps. Additionally, a protocol for late-stage functionalization of bioactive drugs has been developed using benzhydrylphosphonium salts. This new approach should provide novel transformations for application in both academic and pharmaceutical research.

Alkene homologation: via visible light promoted hydrophosphination using triphenylphosphonium triflate

A hydrophosphination reaction of alkenes with triphenylphosphonium triflate under photocatalytic conditions is described. The reaction is promoted by naphthalene-fused N-acylbenzimidazole and is believed to proceed through intermediate formation of a phosphinyl radical cation. The resulting phosphonium salts are directly involved in the Wittig reaction leading to homologated alkenes.

Rational design 2-hydroxypropylphosphonium salts as cancer cell mitochondria-targeted vectors: Synthesis, structure, and biological properties

It has been shown for a wide range of epoxy compounds that their interaction with triphenylphosphonium triflate occurs with a high chemoselectivity and leads to the formation of (2-hydroxypropyl)triphenylphosphonium triflates 3 substituted in the 3-position with an alkoxy, alkylcarboxyl group, or halogen, which were isolated in a high yield. Using the methodology for the disclosure of epichlorohydrin with alcohols in the presence of boron trifluoride ether-ate, followed by the substitution of iodine for chlorine and treatment with triphenylphosphine, 2-hydroxypropyltriphenylphosphonium iodides 4 were also obtained. The molecular and supramolec-ular structure of the obtained phosphonium salts was established, and their high antitumor activity was revealed in relation to duodenal adenocarcinoma. The formation of liposomal systems based on phosphonium salt 3 and L-α-phosphatidylcholine (PC) was employed for improving the bioavailabil-ity and reducing the toxicity. They were produced by the thin film rehydration method and exhibited cytotoxic properties. This rational design of phosphonium salts 3 and 4 has promising potential of new vectors for targeted delivery into mitochondria of tumor cells.

Reaction of R-pulegone with P–H phosphonium salts

The reaction of the R-pulegone with P–H-phosphonium salts gives the corresponding 8-phosphonio-p-menthan-3-one salts with high regio- and stereoselectivity. The structure of salts was determined by NMR and IR spectroscopy, mass spectrometry and X-ray diffraction analysis.

Production of lactide

Disclosed is a method for producing a lactide using a pyridinium-based catalyst, the method involving esterifying the carboxyl group of a lactic acid oligomer by means of a specific primary alcohol and heating the esterified product thus obtained under reduced pressure.

Reaction of 1,4-benzoquinones with PH-phosphonium salts

A novel approach has been proposed to the synthesis of phosphonium salts containing a 1,4-dihydroxybenzo fragment via reaction of 2-methyl-1,4-benzoquinone or 2-isopropyl-5-methyl-1,4-benzoquinone with PH-phosphonium salts generated in situ from triphenylphosphine and trifluoromethanesulfonic or trifluoroacetic acid. The structure of the synthesized phosphonium salts was determined by NMR spectroscopy and X-ray analysis.

Production of lactide

PROBLEM TO BE SOLVED: To overcome defects in use of a tin compound catalyst to obtain a lactide having high optical purity and chemical purity in a lactide production by depolymerization/cyclization of lactic acid oligomer. SOLUTION: The method for production of lactide is characterized by heating the lactic acid oligomer under reduced pressure atmosphere in the presence of a specific organic onium salt and depolymerizing/cyclizing to generate the lactide. COPYRIGHT: (C)2012,JPO&INPIT

Physicochemical properties of phosphonium-based and ammonium-based protic ionic liquids

Trioctylphosphonium triflate, trioctylammonium triflate, triphenylphosphonium triflate and triphenylammonium triflate were synthesized and characterized. It was found that phosphonium-based protic ionic liquids (PILs) exhibit higher thermal stability and