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1275874-85-5

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1275874-85-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1275874-85-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,7,5,8,7 and 4 respectively; the second part has 2 digits, 8 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1275874-85:
(9*1)+(8*2)+(7*7)+(6*5)+(5*8)+(4*7)+(3*4)+(2*8)+(1*5)=205
205 % 10 = 5
So 1275874-85-5 is a valid CAS Registry Number.

1275874-85-5Relevant articles and documents

Synthesis of 2-alkyl-2-boryl-substituted-tetrahydrofurans: Via copper(i)-catalysed borylative cyclization of aliphatic ketones

Kubota, Koji,Uesugi, Minami,Osaki, Shun,Ito, Hajime

, p. 5680 - 5683 (2019/06/18)

A new method was developed for synthesizing 2-alkyl-2-boryl-tetrahydrofuran derivatives from aliphatic ketones using a copper(i)/N-heterocyclic carbene complex catalyst. This reaction presumably proceeds through the nucleophilic addition of a borylcopper(i) intermediate to ketone, followed by intramolecular substitution of the resulting alkoxide for the halide leaving group. The new borylation products, 2-alkyl-2-boryl-tetrahydrofuran derivatives with a condensed structure around the C-B bond, cannot be synthesized by other methods.

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