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309757-66-2

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309757-66-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 309757-66-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,0,9,7,5 and 7 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 309757-66:
(8*3)+(7*0)+(6*9)+(5*7)+(4*5)+(3*7)+(2*6)+(1*6)=172
172 % 10 = 2
So 309757-66-2 is a valid CAS Registry Number.

309757-66-2Downstream Products

309757-66-2Relevant articles and documents

Rhodium-catalyzed heck-type coupling of boronic acids with activated alkenes in an aqueous emulsion

Lautens, Mark,Mancuso, John,Grover, Harpreet

, p. 2006 - 2014 (2004)

Intermolecular couplings between arylboronic acids and activated alkenes catalyzed by a water-soluble tert-bulyl amphosrhodium complex were found to progress at room temperature and generated Heck-type products with high yields and excellent selectivity. Substitution on the alkene component encouraged the formation of products arising from a conjugate addition-protonation process. In the case of Heck product formation, it was necessary to add two equivalents of the alkene component whereby one equivalent is believed to act as a sacrificial hydride acceptor.

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