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81336-57-4

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81336-57-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81336-57-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,3,3 and 6 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 81336-57:
(7*8)+(6*1)+(5*3)+(4*3)+(3*6)+(2*5)+(1*7)=124
124 % 10 = 4
So 81336-57-4 is a valid CAS Registry Number.

81336-57-4Relevant articles and documents

NOVEL PREPARATION METHOD OF QUINOLINE N-OXIDE DERIVATIVE WITH AMIDE GROUP

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Paragraph 138; 139, (2015/11/09)

Provided are a preparation method of a quinoline N-oxide derivative with an amide group capable of easily introducing the amide group into the quinoline N-oxide derivative by simplified processes and mild reaction conditions, and a quinoline N-oxide derivative with an amide group prepared by using the same.

A mild palladium-catalyzed Suzuki coupling reaction of quinoline carboxylates with boronic acids

Li, Wenjie,Gao, Joe J.,Zhang, Yongda,Tang, Wenjun,Lee, Heewon,Fandrick, Keith R.,Lu, Bruce,Senanayake, Chris H.

supporting information; experimental part, p. 1671 - 1675 (2011/09/20)

A palladium-catalyzed cross-coupling between aryl carboxylates and boronic acids has been achieved for the first time by taking advantage of the enhanced reactivity of quinoline 4-carboxylates. Also for the first time a Suzuki coupling reaction via a self-activation of boronic acids without addition of base is described. The reactions proceed under mild conditions (25-65°C) to give excellent yields, and a wide range of functionalities is tolerated. Copyright

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