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Triphenyl-phosphine oxide, also known as TPPO, is an organophosphorus compound with the chemical formula (C6H5)3P=O. It is a colorless, crystalline solid that is soluble in organic solvents and is widely used as a ligand in various chemical reactions, particularly in the field of homogeneous catalysis. On the other hand, 3,4,5,6-tetrachloro-pyrocatechol is a chlorinated derivative of pyrocatechol, with the chemical formula C6Cl4O2. It is a yellow crystalline solid that is soluble in organic solvents and has potential applications in the synthesis of various organic compounds. The compound formed by the combination of triphenyl-phosphine oxide and 3,4,5,6-tetrachloro-pyrocatechol is a complex that exhibits unique chemical properties and reactivity, making it a valuable intermediate in the synthesis of various pharmaceuticals, agrochemicals, and other specialty chemicals.

22400-36-8

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22400-36-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 22400-36-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,2,4,0 and 0 respectively; the second part has 2 digits, 3 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 22400-36:
(7*2)+(6*2)+(5*4)+(4*0)+(3*0)+(2*3)+(1*6)=58
58 % 10 = 8
So 22400-36-8 is a valid CAS Registry Number.

22400-36-8Relevant academic research and scientific papers

THE REACTION OF TETRACHLORO-o-BENZOQUINONE WITH THE SULFIDES OF TRIPHENYLARSINE AND TRIPHENYLSTIBINE

Sidky, M. M.,Mahran, M. R.,Abdou, W. M.

, p. 129 - 136 (2007/10/02)

The reaction of tetrachloro-o-benzoquinone (1) with triphenylarsine sulfide gives a hydrogen-bonded complex of the corresponding hydroquinone and triphenylarsine oxide (5).The same quinone reacts with triphenylstibine sulfide yielding the cyclic adduct (9).In both cases, elemental sulfur is the other product.Possible reaction mechanisms are considered and the structural assignments are based on analytical, chemical and spectroscopic results.

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