757-71-1

Upstream product

• 90196-57-9 diethyl allylphosphonite 
• 106-95-6 allyl bromide 
• 556-56-9 allyl iodid 
• 65600-72-8 ethyl P-(diethoxymethyl)phosphonite 
• 64-17-5 ethanol 
• 35622-32-3 diallyl phosphinic acid 
• 14684-32-3 ethyl phosphinate 
• 121-44-8 triethylamine 

Downstream Products

• 1026598-65-1 allyl(1-benzylallyl)phosphinic acid ethyl ester 
• 695-62-5 1-oxo-1-ethoxy-3-phospholene 

Relevant academic research and scientific papers

Preparation method of phosphinate, phosphinate and non-aqueous electrolyte

The present invention provides a method for preparing phosphinate, the phosphinate and a non-aqueous electrolyte. The method for preparing the phosphinate comprises the following steps: (1) reaction of Grignard reagent R1MgX with thiophosphoryl halide X3P=S in a solvent to obtain a first intermediate; (2) reaction of halogenating agent M' Xa and the first intermediate to obtian a second intermediate; and (3) reaction of the second intermediate with R2OH and water to obtain the phosphinate; wherein R1 and R2 are each selected from the group consisting of hydrocarbon groups or an organic group containing at least one element of boron, silicon, nitrogen, phosphorus, oxygen, sulfur, fluorine, chlorine, bromine, and iodine; X represents a halogen; M' represents a metal element; and a representsa valence of the metal element M'. The electrolyte prepared by from the phosphinate can improve the high-temperature cycle stability of a secondary battery, also has non-flammable, flame-retardant orself-extinguishing characteristics, and can improve the safety performance of the secondary battery.

Molybdenum(0) Dinitrogen Complexes Supported by Pentadentate Tetrapodal Phosphine Ligands: Structure, Synthesis, and Reactivity toward Acids

The syntheses of two pentadentate tetrapodal phosphine (pentaPodP) ligands, P2PhPP2Ph and P2MePP2Ph, are reported, which derive from the fusion of a tripod and a trident ligand. Reaction of the ligand P2PhPP2Ph with [MoCl3(THF)3] followed by an amalgam reduction under N2 does not lead to well-defined products. The same reactions performed with the ligand P2MePP2Ph afford the mononuclear molybdenum dinitrogen complex [MoN2(P2MePP2Ph)]. Because of the unprecedented topology of the pentaphosphine ligand, the Mo-P bond to the phosphine in the trans position to N2 is significantly shortened, explaining the very strong activation of the dinitrogen ligand (νNN = 1929 cm-1). The reactivity of this complex toward acids is investigated.

Molybdenum dinitrogen complexes facially coordinated by linear tridentate PEP ligands (E = N or P): Impact of the central e donor in: Trans -position to N2

The syntheses of molybdenum dinitrogen complexes supported by the tridentate PEP ligands (E = N, P) prPP(Ph)P = (Ph2PCH2CH2CH2)2P(Ph), prPPHP = (Ph2PCH2CH2CH2)2PH, PN(Ph)P = (Ph2PCH2CH2)2N(Ph) and prPN(Ph)P = (Ph2PCH2CH2CH2)2N(Ph) are reported. Together with the coligand dmpm = (CH3)2PCH2P(CH3)2 dinitrogen complexes of the type [Mo(N2)(PEP)(dmpm)] are formed. The new systems are characterized by IR and NMR spectroscopy and compared with the literature-known complex [Mo(N2)(dpepp)(dmpm)] (1) (dpepp = PhP(CH2CH2PPh2)2). The consequences of the substitution of the central P-donor of dpepp by N and the replacement of its C2 by C3 linkages as well as the exchange of the EPh by an EH function are investigated with respect to the stability of the corresponding N2-complexes. Importantly, the activation of the N2 ligand drastically increases upon replacing the trans-phosphine with a trans-amine donor.

Direct monoalkylation of alkyl phosphinates to access H-phosphinic acid esters

Simple alkyl phosphinates prepared by the silicate esterification method can be alkylated under Barbier-like conditions with butyl lithium at -78 °C followed by warming to room temperature. The method is limited to the more reactive electrophile such as allylic bromides and alkyl iodides. With these electrophiles good yields of H-phosphinic acid esters are generally obtained in a straightforward manner. Georg Thieme Verlag Stuttgart.