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447714

Sigma-Aldrich

Methylenebis(phosphonic dichloride)

97%

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About This Item

Linear Formula:
CH2[P(O)Cl2]2
CAS Number:
1499-29-2
Molecular Weight:
249.78
MDL number:
MFCD00013901
UNSPSC Code:
12352100
PubChem Substance ID:
24868355
NACRES:
NA.22

Assay

97%

form

solid

mp

102-104 °C (lit.)

SMILES string

ClP(Cl)(=O)CP(Cl)(Cl)=O

InChI

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

InChI key

VRXYCDTWIOCJBH-UHFFFAOYSA-N

Related Categories

General description

Methylenebis(phosphonic dichloride) is an organophosphorus compound that is commonly used in phosphonylation reactions. It is more reactive and the rate of reaction is faster compared to POCl3. This is because the phosphorus center is more electrophilic due to the lack of electron back-donation from the CH2 group.

Application

Methylenebis(phosphonic dichloride) may be used for the following studies:
  • Synthesis of mycophenolic methylenebis(phosphonate) derivatives.
  • Phosphonylation of nucleosides.
  • Preparation of P,P′-partial esters of methylenebisphosphonic acid.
  • Synthesis of symmetrical di- and tetra- esters of methylenebisphosphonic acid.

Pictograms

Corrosion
GHS05

Signal Word

Danger

Hazard Statements

H314

Hazard Classifications

Eye Dam. 1 - Skin Corr. 1B

Supplementary Hazards

EUH014

Storage Class Code

8A - Combustible corrosive hazardous materials

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

JAN Code

447714-VAR:
447714-1G:
447714-BULK:
447714-5G:

Certificates of Analysis (COA)

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Gantla Vidyasagar Reddy et al.
Synthetic communications, 34(2), 331-344 (2004-01-01)
The preparation of partial esters of methylenebisphosphonic acids has been of recent interest due to their potential therapeutic applications. This paper describes a convenient method to prepare symmetrical methylenebis(alkyl hydrogen phosphonates) by the selective cleavage of the corresponding methylenebis(dialkyl phosphonate)
Krzysztof W Pankiewicz et al.
Journal of medicinal chemistry, 45(3), 703-712 (2002-01-25)
Novel mycophenolic adenine dinucleotide (MAD) analogues have been prepared as potential inhibitors of inosine monophosphate dehydrogenase (IMPDH). MAD analogues resemble nicotinamide adenine dinucleotide binding at the cofactor binding domain of IMPDH; however, they cannot participate in hydride transfer and therefore
Sanjay Bhattarai et al.
Journal of medicinal chemistry, 63(6), 2941-2957 (2020-02-12)
CD73 inhibitors are promising drugs for the (immuno)therapy of cancer. Here, we present the synthesis, structure-activity relationships, and cocrystal structures of novel derivatives of the competitive CD73 inhibitor α,β-methylene-ADP (AOPCP) substituted in the 2-position. Small polar or lipophilic residues increased
Aviran Amir et al.
The Journal of organic chemistry, 78(2), 270-277 (2012-12-05)
A new transformation of methylene-bis(phosphonic dichloride) into tetrathiobisphosphonate derivatives is reported. The reaction of methylene-bis(phosphonic dichloride) with 1,2-ethanedithiol in bromoform in the presence of AlCl(3) formed methylene-bis(1,3,2-dithiaphospholane-2-sulfide), which gave rise to O,O'-diester-methylenediphosphonotetrathioate analogues 1a-k upon reaction with phenols and alkyl
A direct method for the synthesis of nucleoside 5'-methylenebis (phosphonate) s from nucleosides.
Kalek M, et al.
Tetrahedron Letters, 46(!4), 2417-2421 (2005)
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