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457630-02-3

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457630-02-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 457630-02-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,5,7,6,3 and 0 respectively; the second part has 2 digits, 0 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 457630-02:
(8*4)+(7*5)+(6*7)+(5*6)+(4*3)+(3*0)+(2*0)+(1*2)=153
153 % 10 = 3
So 457630-02-3 is a valid CAS Registry Number.

457630-02-3Downstream Products

457630-02-3Relevant articles and documents

Studies on Pd0-catalyzed cyclization of N-3,4-alkadienyl toluenesulfonamides with organic halides: Selective synthesis of 2,3-dihydropyrroles, 1,2,3,6-tetrahydropyrridines, and azetidines

Ma, Shengming,Yu, Fei,Li, Jing,Gao, Wenzhong

, p. 247 - 254 (2007/10/03)

The palladium-catalyzed coupling-cyclization of β-amino allenes with organic halides ranging from aryl halide to 1-alkenyl halide was studied. 2,3-Dihydro-1H-pyrroles were obtained by reaction of 3-substituted-5- unsubstituted-3,4-allenyl amides under conditions A, while the reaction of 5-substituted-3,4-allenyl amides afforded 1,2,5,6-tetrahydropyridines and/or azetidines with high de under conditions B or C. The skeleton and relative configuration of the six-membered products were established by the X-ray diffraction studies of 10ka. Allenyl amide 4q reacted with 1,4-diiodobenzene 6r to afford double cyclization product 15. The structure of its major stereoisomer was also determined by the X-ray diffraction study.

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