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Phosphine, methylbis(4-methylphenyl)-, also known as bis(4-methylphenyl)methylphosphine, is an organophosphorus compound with the chemical formula C14H15P. It is a colorless to pale yellow liquid that is soluble in organic solvents and has a molecular weight of 218.24 g/mol. Phosphine, methylbis(4-methylphenyl)- is primarily used as a ligand in coordination chemistry, particularly in the synthesis of transition metal complexes, and as a reagent in various organic reactions. Due to its phosphorus-carbon bond, it exhibits unique reactivity and stability, making it a valuable building block in the development of new materials and pharmaceuticals.

1486-25-5

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1486-25-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1486-25-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,4,8 and 6 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1486-25:
(6*1)+(5*4)+(4*8)+(3*6)+(2*2)+(1*5)=85
85 % 10 = 5
So 1486-25-5 is a valid CAS Registry Number.

1486-25-5Relevant academic research and scientific papers

Thermal Stability of Phosphinoacetic Acids

Doorn, Johannes A. van,Meijboom, Nico

, p. 1309 - 1314 (2007/10/02)

Phosphinoacetic acids decarboxylate smoothly in toluene solution at 99 deg C and the corresponding alkylphosphine is formed in quantitative yields.Electron-withdrawing substituents at the α position of the carboxylic acid lead to a large increase in the reaction rate.In contrast, electron-withdrawing substituents at the phosphorus atom lead to a small decrease in the rate.We have concluded from the substituent effects, solvent effects, and the influence of bases and acids that both the lone pair of the phosphorus atom and the carboxylate hydrogen atom play a crucial role in the reaction.A mechanism is proposed that proceeds via an ylide.Sodium phosphinocarboxylates do not decarboxylate in an aqueous solution at 95 deg C.Instead a carbon-phosphorus bond cleavage occurs probably by an intramolecular nucleophilic substitution.

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