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1309154-13-9

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1309154-13-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1309154-13-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,0,9,1,5 and 4 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1309154-13:
(9*1)+(8*3)+(7*0)+(6*9)+(5*1)+(4*5)+(3*4)+(2*1)+(1*3)=129
129 % 10 = 9
So 1309154-13-9 is a valid CAS Registry Number.

1309154-13-9Relevant articles and documents

Rhodium-catalyzed carbon-silicon bond activation for synthesis of benzosilole derivatives

Onoe, Masahiro,Baba, Katsuaki,Kim, Yoonjoo,Kita, Yusuke,Tobisu, Mamoru,Chatani, Naoto

, p. 19477 - 19488 (2013/02/21)

A rhodium-catalyzed coupling reaction of 2-trimethylsilylphenylboronic acid with internal alkynes is developed for the synthesis of 2,3-disubstituted benzosilole derivatives. A range of functional groups, encompassing ketones, esters, amines, aryl bromides, and heteroarenes, are compatible, which provides rapid access to diverse benzosiloles. Sequential 2-fold coupling enables modular synthesis of asymmetrically substituted 1,5-dihydro-1,5-disila-s-indacene, a π-extended molecule of interest in organic electronics. In terms of the mechanism, the reaction involves cleavage of a C(alkyl)-Si bond in a trialkylsilyl group, which normally requires extremely harsh conditions for activation. Mechanistic studies, including effects of substituents, reveal that C-Si bond cleavage does not proceed through a hypercoordinated silicon species, but rather through a rhodium-mediated activation process. The potential use of the reaction in catalytic asymmetric synthesis of Si-chiral benzosiloles is also demonstrated.

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