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147631-19-4

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147631-19-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 147631-19-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,7,6,3 and 1 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 147631-19:
(8*1)+(7*4)+(6*7)+(5*6)+(4*3)+(3*1)+(2*1)+(1*9)=134
134 % 10 = 4
So 147631-19-4 is a valid CAS Registry Number.

147631-19-4Relevant articles and documents

Synthesis and interconversions of azagermatranes

Wan, Yanjian,Verkade, John G.

, p. 79 - 81 (2008/10/08)

The syntheses of the first examples of the title compounds, namely, ZGe(NRCH2CH2)3N (4, R = H, Z = Me; 5, R = Me, Z = Me; 6, R = H, Z = t-Bu; 7, R = Me, Z = t-Bu; 8, R = Me, Z = NMe2) are reported. Syntheses of the new compounds MeGe(NMe2)3 and t-BuGe(NMe2)3 and an improved synthesis of Ge(NMe2)4 are also recorded. The azagermatranes 5 and 7 are transformed to 4 and 6, respectively, in the presence of (H2NCH2CH2)3N. This reaction was not found to be reversible, however. Azagermatranes 4 or 5 and 6 or 7 in the presence of (HOCH2CH2)3N easily react to give MeGe(OCH2CH2)3N and t-BuGe(OCH2CH2)3N, respectively. Because of steric factors, one or more of compounds 6-8 may display weakened transannular Ge←N bonding or even an absence of this bonding.

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