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ethyl 3-methyl-2-oxo-3,4-dihydro-2H-chromen-3-carboxylate is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

77202-45-0

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77202-45-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 77202-45-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,2,0 and 2 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 77202-45:
(7*7)+(6*7)+(5*2)+(4*0)+(3*2)+(2*4)+(1*5)=120
120 % 10 = 0
So 77202-45-0 is a valid CAS Registry Number.

77202-45-0Downstream Products

77202-45-0Relevant academic research and scientific papers

Substituted coumarins as ambident nucleophiles in one-pot hydrogenation/alkylation reaction

Petkova-Yankova, Nevena I.,Nikolova, Rositca D.

, p. 2627 - 2634 (2020)

The regioselectivity of a one-pot hydrogenation/alkylation reaction of coumarins 1a and 1b with series of alkyl halides has been elucidated as a complementary work to reaction of acylation with the same coumarins. Reaction conditions have provided formation of only C-alkylation products with good to high yield. The results from the experiments are of significant importance to predict reactivity of 3-substituted coumarins in different reaction conditions.

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