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34772-26-4

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34772-26-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 34772-26-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,4,7,7 and 2 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 34772-26:
(7*3)+(6*4)+(5*7)+(4*7)+(3*2)+(2*2)+(1*6)=124
124 % 10 = 4
So 34772-26-4 is a valid CAS Registry Number.

34772-26-4Relevant articles and documents

Preparation of Complexes Bearing N-Alkylated, Anionic or Protic CAACs Through Oxidative Addition of 2-Halogenoindole Derivatives

Termühlen, Sebastian,Blumenberg, Jonas,Hepp, Alexander,Daniliuc, Constantin G.,Hahn, F. Ekkehardt

, p. 2599 - 2602 (2021)

CAAC precursors 2-chloro-3,3-dimethylindole 1 and 2-chloro-1-ethyl-3,3-dimethylindolium tetrafluoroborate 2BF4 have been prepared and oxidatively added to [M(PPh3)4] (M=Pd, Pt). Salt 2BF4 reacts with [Pd(PPh3)4] in toluene at 25 °C over 4 days to yield complex cis-[3]BF4 featuring an N-ethyl substituted CAAC, two cis-arranged phosphines and a chloro ligand. Compound trans-[3]BF4 was obtained from the same reaction at 80 °C over 1 day. Salt 2BF4 reacts with [Pt(PPh3)4] to give cis-[4]BF4. The neutral indole derivative 1 adds oxidatively to [Pt(PPh3)4] to give trans-[5] featuring a CAAC ligand with an unsubstituted ring-nitrogen atom. This nitrogen atom has been protonated with py?HBF4 to give trans-[6]BF4 bearing a protic CAAC ligand. The PdII complex trans-[7]BF4 bearing a protic CAAC ligand was obtained in a one-pot reaction from 1 and [Pd(PPh3)4] in the presence of py?HBF4.

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