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19894-82-7

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19894-82-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 19894-82-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,8,9 and 4 respectively; the second part has 2 digits, 8 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 19894-82:
(7*1)+(6*9)+(5*8)+(4*9)+(3*4)+(2*8)+(1*2)=167
167 % 10 = 7
So 19894-82-7 is a valid CAS Registry Number.

19894-82-7Relevant articles and documents

Diastereoselective Synthesis of Highly Substituted Tetrahydrofurans by Pd-Catalyzed Tandem Oxidative Cyclization-Redox Relay Reactions Controlled by Intramolecular Hydrogen Bonding

Brooks, Joshua L.,Xu, Liping,Wiest, Olaf,Tan, Derek S.

supporting information, p. 57 - 75 (2017/04/26)

Palladium-catalyzed oxidative cyclization of alkenols provides a convenient entry into cyclic ethers but typically proceeds with little or no diastereoselectivity for cyclization of trisubstituted olefins to form tetrahydrofurans due to the similar energi

Microwave Heating Effects Rapid and Selective Decarboalkoxylation of Mono-Alkylated Malonates and β-Ketoesters

Curran, Dennis P.,Zhang, Qisheng

, p. 329 - 332 (2007/10/03)

Brief microwave irradiation of mono-alkylated malonates and β-ketoesters at 160-200 °C in wet DMF induces smooth and selective decarboalkoxylation. Observations suggest that this reaction occurs by nucleophilic attack of water at the ester carbonyl carbon (hydrolysis) followed by decarboxylation of the resulting acid. The process occurs despite the absence of traditional acid, base or nucleophile catalysts or reagents.

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