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69563-03-7

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69563-03-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 69563-03-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,9,5,6 and 3 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 69563-03:
(7*6)+(6*9)+(5*5)+(4*6)+(3*3)+(2*0)+(1*3)=157
157 % 10 = 7
So 69563-03-7 is a valid CAS Registry Number.

69563-03-7Relevant articles and documents

Synthesis of Urea Derivatives from CO2 and Silylamines

Xu, Maotong,Jupp, Andrew R.,Ong, Maegan S. E.,Burton, Katherine I.,Chitnis, Saurabh S.,Stephan, Douglas W.

supporting information, p. 5707 - 5711 (2019/04/16)

A series of thirty-three N,N′-diaryl, dialkyl, and alkyl-aryl ureas have been prepared in pyridine or toluene by reaction of silylamines with CO2. This protocol is shown to provide facile access to 13C-labeled ureas, as well as chiral and macrocyclic ureas. These reactions proceed through initial generation of the corresponding silylcarbamates, which subsequently react with silylamine under thermal conditions to afford the thermodynamically favored urea and disilyl ether.

Synthesis of 1,3-dichloro- cyclo -1,3-diphosphadiazanes from silylated amino(dichloro)phosphanes

Schulz, Axel,Villinger, Alexander,Westenkirchner, Andrea

supporting information, p. 11457 - 11468 (2013/10/22)

The synthesis of 1,3-dichloro-cyclo-1,3-diphosphadiazanes [ClP(μ-NR)]2 via elimination of Me3SiCl from silylated amino(dichloro)phosphanes, R-N(SiMe3)PCl2, was studied by different synthetic protocols starting from R-N(H)SiMe3 (R = Si(SiMe3)3 = Hyp, N(SiMe3)2, Mes* = 2,4,6-tri-tert-butylphenyl, Ter = 2,4-bis(2,4,6-trimethylphenyl) phenyl, Dipp = 2,6-diisopropylphenyl, Dmp =2,6-dimethylphenyl, Ad = Adamantyl, Trityl = Ph3C, Tos = tosyl = CH3C6H 4SO2, n-Oct = n-octyl, and Me3Si). A new synthetic route using trimethylsilyl-substituted amino(dichloro)phosphanes, R-N(SiMe3)PCl2, was developed to form cyclo-diphosph(III)- azanes simply by adding a mixture of RfOH/base (RfOH = hexafluoroisopropanole). By this method electron-rich/-poor aryl-, silyl-, and bissilylamino-substituted cyclo-diphosph(III)-azanes are accessible such as the unprecedented (Me3Si)2N-substituted species [ClP(μ-NN(SiMe3)2)]2 starting from tris(trimethylsilyl)hydrazine and PCl3. Additionally, the difficulties with the preparation of cyclo-diphosphadiazanes depending on the starting materials, solvents, and bases due to the competition of different reaction channels are studied.

13C, 15N and 29Si nuclear magnetic resonance studies of some aminosilanes and aminodisilanes

Wrackmeyer, Bernd,Stader, Carin,Zhou, Hong

, p. 1101 - 1112 (2007/10/02)

13C, 15N (at natural abundance) and 29Si NMR data (chemical shifts and coupling constants) are reported for aminosilanes R2R'Si-NHR1 (1), bis(silyl)amines Me2R'Si-NHSiMe3 (2), 1,2-bis(amino)ethanes (3), bis(amin

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