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Dichloro(p-ethyl-phenyl)phosphine is an organophosphorus compound with the chemical formula C8H10Cl2P. It is a colorless to pale yellow liquid that is soluble in organic solvents. dichloro(p-ethyl-phenyl)phosphine is characterized by the presence of a phosphorus atom bonded to two chlorine atoms and a p-ethyl-phenyl group, which is a phenyl ring with an ethyl substituent at the para position. It is synthesized by reacting p-ethyl-phenylmagnesium bromide with phosphorus dichloride. Dichloro(p-ethyl-phenyl)phosphine is used as an intermediate in the production of various organophosphorus compounds, such as pesticides and flame retardants, due to its reactivity and ability to form stable derivatives. It is also employed in the synthesis of ligands for transition metal complexes. Handling dichloro(p-ethyl-phenyl)phosphine requires caution, as it is toxic and can pose health risks if not properly managed.

5274-50-0

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5274-50-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 5274-50-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,2,7 and 4 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 5274-50:
(6*5)+(5*2)+(4*7)+(3*4)+(2*5)+(1*0)=90
90 % 10 = 0
So 5274-50-0 is a valid CAS Registry Number.

5274-50-0Relevant academic research and scientific papers

AlCl3-catalyzed C-H p hosphination of benzene: A mechanistic study

Duan, Haodong,Gao, Jun,Guo, Ge,Han, Yuxi,Leng, Kangwei,Li, Xinjin,Wang, Zhongwei,Xu, Xiaolei,Yu, Qing

, (2021)

The characteristics of the reaction for the preparation of dichlorophenylphosphine (DCPP) via benzene and PCl3 in the presence of AlCl3 were studied. Some unique characteristics were observed when a catalytic amount of AlCl3 was used. Namely, more than one mole of DCPP was obtained per mole AlCl3, the reaction solution was layered, and DCPP could be directly separated. Our mechanistic study showed that benzene reacted with PCl3 to form DCPP-AlCl3, and DCPP-AlCl3 dissociated into DCPP and AlCl3, continuing to catalyze this reaction. This resulted in the high catalytic efficiency of AlCl3. The layering of the reaction solution was caused by the immiscibility of DCPP-AlCl3 with the raw materials, greatly facilitating the dissociation process of DCPP-AlCl3. The formation of diphenylphosphorus chloride (DPC) was due to a continuous Friedel-Crafts reaction between DCPP and benzene. DPC cooperated with AlCl3 to form the stable coordination compound DPC-AlCl3 that did not dissociate and was responsible for the deactivation of AlCl3.

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