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27389-56-6

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27389-56-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 27389-56-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,7,3,8 and 9 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 27389-56:
(7*2)+(6*7)+(5*3)+(4*8)+(3*9)+(2*5)+(1*6)=146
146 % 10 = 6
So 27389-56-6 is a valid CAS Registry Number.

27389-56-6Relevant articles and documents

Cross-Coupling of Organolithium with Ethers or Aryl Ammonium Salts by C?O or C?N Bond Cleavage

Yang, Ze-Kun,Wang, Dong-Yu,Minami, Hiroki,Ogawa, Hiroyuki,Ozaki, Takashi,Saito, Tatsuo,Miyamoto, Kazunori,Wang, Chao,Uchiyama, Masanobu

, p. 15693 - 15699 (2016)

Various aryl-, alkenyl-, and/or alkyllithium species reacted smoothly with aryl and/or benzyl ethers with cleavage of the inert C?O bond to afford cross-coupled products, catalyzed by commercially available [Ni(cod)2] (cod=1,5-cyclooctadiene) catalysts with N-heterocyclic carbene (NHC) ligands. Furthermore, the coupling reaction between the aryllithium compounds and aryl ammonium salts proceeded under mild conditions with C?N bond cleavage in the presence of a [Pd(PPh3)2Cl2] catalyst. These methods enable selective sequential functionalizations of arenes having both C?N and C?O bonds in one pot.

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