1499-29-2

Usage

Uses

Used in Water Treatment Industry:
Methylenebis(phosphonic dichloride) is used as a key intermediate for synthesizing water treatment chemicals. It is effective in binding to metal ions, which helps in inhibiting the formation of scale and corrosion in water systems.
Used in Flame Retardant Industry:
Methylenebis(phosphonic dichloride) is used as a precursor in the production of flame retardants. Its phosphorus content contributes to the fire-resistant properties of the final products.
Used in Pharmaceutical Industry:
Methylenebis(phosphonic dichloride) is used as an intermediate in the synthesis of pharmaceuticals. Its reactivity and ability to form stable compounds make it a valuable component in the development of new drugs.
Used in Industrial Processes:
Methylenebis(phosphonic dichloride) is used as a chemical intermediate in various industrial processes. Its high reactivity allows for the creation of a wide range of phosphonate-based products, which can be tailored for specific applications. Due to its potential hazards, it should be handled with caution and in accordance with proper safety measures.

InChI:InChI=1/CH2Cl4O2P2/c2-8(3,6)1-9(4,5)7/h1H2

Upstream product

• 1660-95-3 Tetraisopropyl methylenediphosphonate 
• 1984-15-2 Methylenediphosphonic acid 
• 1660-94-2 Tetraethyl methylenediphosphonate 
• 6997-56-4 methylenediphosphonic acid tetrabutyl ester 
• 28240-68-8 methylenebis(dichlorophosphine) 

Downstream Products

• 1984-15-2 Methylenediphosphonic acid 
• 1499-32-7 methylenediphosphonothioic dichloride 
• 1660-95-3 Tetraisopropyl methylenediphosphonate 
• 252931-41-2 tetrakis[3-(phenylmethanoyloxy)propyl] methylenebisphosphonate 
• 1009563-49-8 dimethyl N,N'-methylenebis(N'-methyl-N'-(phenylcarbonothionyl)-phosphonohydrazinate) 
• 1346258-33-0 C₂₃H₃₄N₄O₈P₂ 
• 1346258-39-6 C₁₉H₃₁N₃O₆P₂ 
• 1346258-36-3 C₃₉H₅₀N₄O₁₂P₂ 
• 1346258-37-4 C₂₁H₃₃Cl₂N₃O₆P₂ 
• 1428320-17-5 1,1-bis(di-(3-methoxyphenylyl)phosphonato)methane 

Relevant academic research and scientific papers

Rh(III)-catalyzed, 1,2,3-triazole-assisted directed C–H coupling with diazo diphosphonates

A mild and efficient procedure was developed for the [Cp?Rh(III)]-catalyzed, 1,2,3-triazole directed C–H coupling with diazomethylene-diphosphonates. This protocol provided a step- and atom-economical protocol for C–C bond formation and led to structurally diverse 2-(1,2,3-triazol-2-yl)benzyl diphosphonates in good to excellent yields.

Preparation of organohalosilanes

In an industrial process for preparing organohalosilanes by reacting metallic silicon particles with an organohalide in the presence of a copper catalyst, a contact mass composed of the metallic silicon and the catalyst further contains an effective amount of a phosphine chalcogenide compound. The invention drastically increases the silane formation rate and the utilization of silicon without lowering the selectivity of useful silane.

Synthesis and Nuclear Magnetic Resonance Spectroscopic Studies of Alkylene / Alkylidenebis(phosphonic Dihalides) and -bis(fluorophosphoranes)

Chlorine-fluorine exchange in the bis(phosphonic dichlorides) Cl2P(O)-X-P(O)Cl2 (1a - c) with AsF3 furnishes the bis(phosphonic difluorides) F2P(O)-X-P(O)F2 (2a - c).Reaction of 2a - c with SF4 leads to bis(tetrafluorophosphoranes) F4P-X-PF4 (3a - c) (X = CH2, CH2CH2, trans-CH=CH).Additional methods of synthesis are indicated for compound 3a (X = CH2) which are based on the cleavage of the Si-C bond with PF5 in the Si-C bonded precursors 2 and Me3SiCH2PF4.The NMR spectra of compounds 2 and 3 are discussed.