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22661-24-1

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22661-24-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 22661-24-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,2,6,6 and 1 respectively; the second part has 2 digits, 2 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 22661-24:
(7*2)+(6*2)+(5*6)+(4*6)+(3*1)+(2*2)+(1*4)=91
91 % 10 = 1
So 22661-24-1 is a valid CAS Registry Number.

22661-24-1Downstream Products

22661-24-1Relevant articles and documents

BPh3-Catalyzed [2+3] Cycloaddition of Ph3PCCO with Aldonitrones: Access to 5-Isoxazolidinones with Exocyclic Phosphonium Ylide Moieties

Brar, Amandeep,Unruh, Daniel K.,Ling, Natalie,Krempner, Clemens

, p. 6305 - 6309 (2019)

A method for the generation of 5-isoxazolidinones with exocyclic phosphonium ylide functionalities via [2+3] cycloaddition of Ph3PCCO and aldonitrones has been developed and applied in the synthesis of 4-alkylidene-5-isoxazolidinones via Wittig olefination. The reaction proceeds by BPh3 catalysis under mild conditions and with a broad substrate scope. A reaction pathway involving the activation of the aldonitrone via interactions with the Lewis acid BPh3 is proposed.

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