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23027-90-9

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23027-90-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 23027-90-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,3,0,2 and 7 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 23027-90:
(7*2)+(6*3)+(5*0)+(4*2)+(3*7)+(2*9)+(1*0)=79
79 % 10 = 9
So 23027-90-9 is a valid CAS Registry Number.

23027-90-9Downstream Products

23027-90-9Relevant articles and documents

Exploiting the Bis-Nucleophilicity of α-Aminoboronates: Copper-Catalyzed, Intramolecular Aminoalkylations of Bromobenzoyl Chlorides

Dumas, Aaron M.,Sieradzki, Adrian J.,Donnelly, Liam J.

, p. 1848 - 1851 (2016/05/19)

α-Aminoboronate salts are interesting examples of heteroatomic species containing adjacent nucleophilic centers. We have developed an acylation/arylation reaction using 2-bromobenzoyl chlorides as bis-electrophiles that harnesses the nucleophilicity of both positions, leading to isoindolinones. The reactions proceed under mild conditions via an intramolecular, Cu-catalyzed sp3-sp2 coupling, giving products in up to 95% yield. These conditions enable arylation of α,α-disubstituted aminoboronates, which are difficult to accomplish using methods based on less abundant and more expensive transition metals.

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