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41979-47-9

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41979-47-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 41979-47-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,1,9,7 and 9 respectively; the second part has 2 digits, 4 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 41979-47:
(7*4)+(6*1)+(5*9)+(4*7)+(3*9)+(2*4)+(1*7)=149
149 % 10 = 9
So 41979-47-9 is a valid CAS Registry Number.

41979-47-9Relevant articles and documents

The silver(I) coordination polymer [AgO2PPh2]n and unsupported A?Ag interactions derived from aminophosphinate and phosphinic acid

Moodley, Vashen,Mthethwa, Londiwe,Pillay, Michael N.,Omondi, Bernard,Van Zyl, Werner E.

, p. 87 - 95 (2015)

Abstract The ligand N-tert-butyl-1,1-diphenylphosphinamine, Ph2P-N(H)CMe3, was prepared from tert-butylamine and diphenylchlorophosphine. The phosphine portion of the ligand became partially oxidized in air to form Ph2P(O)

Copper(I)-Catalyzed Asymmetric Synthesis of P-Chiral Aminophosphinites

Li, Yan-Bo,Tian, Hu,Xiao, Jun-Zhao,Yin, Liang,Zhang, Shuai

supporting information, (2022/02/17)

Herein, a copper(I)-catalyzed reaction of diarylphosphines and O-benzoyl hydroxylamines is developed. In the cases of symmetrical diarylphosphines, a series of aminophosphinites is prepared in high yields. In the cases of unsymmetrical diarylphosphines, an array of P-chiral aminophosphinites is synthesized in high yields with high enantioselectivity by using a copper(I)-(R,RP)-Ph-FOXAP complex as a chiral catalyst. Based on several control experiments and 31P NMR studies, a two-electron redox mechanism involving the dynamic kinetic asymmetric transformation of unsymmetrical diarylphosphines is proposed for the copper(I)-catalyzed asymmetric reaction. Finally, one representative P-chiral phosphoric amide generated through the oxidation with H2O2 is transformed to a chiral diarylphosphinate in high yield with retained enantioselectivity, which allows further transformations towards various P-chiral tertiary phosphines.

Regio- and diastereoselective preparation of tetrahydrobenzo[c]-1-aza-2lambda(5)-phospholes through dearomatization cyclization of lithiated N-benzyl-N-alkyl(diphenyl)phosphinamides. Synthesis of gamma-(N-alkylamino)phosphinic acids.

Fernandez, Ignacio,Ortiz, Fernando Lopez,Velazquez, Amador Menendez,Granda, Santiago Garcia

, p. 3852 - 3860 (2007/10/03)

A study of the protonation of the cycloadducts derived from the dearomatization reaction of lithiated N-alkyl-N-benzyldiphenylphosphinamides has been carried out. The regio- and stereoselectivity of the process has been analyzed in terms of the size of the N-alkyl substituent, the acidity and size of the protonating reagent, and the cosolvent used. The optimization of these variables allowed the preparation of tetrahydrobenzo[c]-1-aza-2lambda(5)-phospholes containing a 1,3-cyclohexadiene or 1,4-cyclohexadiene system with moderate to excellent regio- and stereocontrol. The heterocycles were readily hydrolyzed, affording gamma-(N-alkylamino)diphenylphosphinic acids with the functionalities linked to a cyclohexadiene substructure.

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