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163458-23-9

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163458-23-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 163458-23-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,3,4,5 and 8 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 163458-23:
(8*1)+(7*6)+(6*3)+(5*4)+(4*5)+(3*8)+(2*2)+(1*3)=139
139 % 10 = 9
So 163458-23-9 is a valid CAS Registry Number.

163458-23-9Downstream Products

163458-23-9Relevant articles and documents

Synthesis of (+)- and (-)-N-BOC-7-azabicyclo[2.2.1]heptan-2-ones, versatile intermediates for the enantiospecific synthesis of (+)- and (-)-epibatidine and analogues

Hernandez,Marcos,Rapoport

, p. 2683 - 2691 (2007/10/02)

(+)- and (-)-Epibatidine, nonopiate antinociceptive alkaloids, have been prepared from (-)- and (+)-N-BOC-7-azabicyclo[2.2.1]heptan-2-one which were produced by resolution of the racemic mixture of the corresponding alcohols obtained in the previous racemic synthesis. In the present work, we report the enantiospecific synthesis of (-)- and (+)-N-BOC-7-azabicyclo[2.2.1]heptan-2-one from L-glutamic acid and levulinic acid. Also, this report describes the selective formation of trans-2,3-disubstituted-7-azabicyclo[2.2.1]heptanes from N-benzyl-5-(1'-methoxycarbonyl-3'-exobutyl)proline via a decarbonylation/iminium ion cyclization process. These functionalized intermediates are of potential value for the enantiospecific synthesis of epibatidine analogues.

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