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914458-48-3

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914458-48-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 914458-48-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,1,4,4,5 and 8 respectively; the second part has 2 digits, 4 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 914458-48:
(8*9)+(7*1)+(6*4)+(5*4)+(4*5)+(3*8)+(2*4)+(1*8)=183
183 % 10 = 3
So 914458-48-3 is a valid CAS Registry Number.

914458-48-3Relevant articles and documents

[3+2] Anionic Cycloaddition of Isocyanides to Acyclic Enamines and Enaminones: A New, Simple, and Convenient Method for the Synthesis of 2,4-Disubstituted Pyrroles

Bakulev, Vasiliy A.,Efimov, Ilya V.,Luque, Rafael,Matveeva, Maria D.,Voskressensky, Leonid G.

, (2019)

We herein demonstrate a new approach for the synthesis of 2,4-disubstituted pyrroles by [3+2] cycloaddition reaction of isocyanides to the activated double bond of various enamines and enaminones. This process paved the way for the synthesis a series of 2,4-disubstituted pyrroles, which are known to be intermediates in the synthesis of biologically active compounds, in good to excellent yields from simple and commercially available starting materials. The process is carried out efficiently using a strong base, tBuOK, at low temperatures (0 °C). The described method is simple, proceeds in one step, does not require additional catalysts and hence, has a wide scope.

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