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1201633-86-4

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1201633-86-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1201633-86-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,0,1,6,3 and 3 respectively; the second part has 2 digits, 8 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1201633-86:
(9*1)+(8*2)+(7*0)+(6*1)+(5*6)+(4*3)+(3*3)+(2*8)+(1*6)=104
104 % 10 = 4
So 1201633-86-4 is a valid CAS Registry Number.

1201633-86-4Relevant articles and documents

A chemoselective Reformatsky-Negishi approach to α-haloaryl esters

Wong, Brian,Linghu, Xin,Crawford, James J.,Drobnick, Joy,Lee, Wendy,Zhang, Haiming

, p. 1508 - 1515 (2014/02/14)

A practical synthesis of α-haloaryl esters has been achieved via a chemoselective Negishi coupling of poly-halogenated aromatics and Reformatsky reagents in the presence of catalytic Pd(dba)2 and Xantphos. This chemistry tolerates a variety of aryl halides and was successfully applied to the synthesis of Ibuprofen. The α-haloaryl ester products, exemplified by ethyl 2-(4-bromo-2-chlorophenyl)acetate (3a), can be further functionalized via palladium or copper catalysis to afford an array of α-aryl esters.

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