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N-acyldihydropyridones as synthetic intermediates. A stereoselective synthesis of acyclic amino alcohols containing multiple chiral centers.


ABSTRACT: Various multisubstituted piperidines containing a phenyl group at C-2 can be opened regio- and stereoselectively with cyanogen bromide. The ring-opened products contain useful cyanamide and benzylic bromide functional groups. The benzyl bromide can be cleanly reduced, or substituted with various nucleophiles via an S(N)2 process to add additional heteroatoms stereoselectively. This methodology is useful for the stereoselective synthesis of uniquely substituted alkylamine derivatives containing multiple chiral centers and various functionality. Diastereomerically pure amino alcohols containing three to five contiguous stereocenters were prepared using this strategy.

SUBMITTER: McCall WS 

PROVIDER: S-EPMC2736366 | biostudies-literature | 2008 Dec

REPOSITORIES: biostudies-literature

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N-acyldihydropyridones as synthetic intermediates. A stereoselective synthesis of acyclic amino alcohols containing multiple chiral centers.

McCall W Stephen WS   Grillo Teresa Abad TA   Comins Daniel L DL  

The Journal of organic chemistry 20081201 24


Various multisubstituted piperidines containing a phenyl group at C-2 can be opened regio- and stereoselectively with cyanogen bromide. The ring-opened products contain useful cyanamide and benzylic bromide functional groups. The benzyl bromide can be cleanly reduced, or substituted with various nucleophiles via an S(N)2 process to add additional heteroatoms stereoselectively. This methodology is useful for the stereoselective synthesis of uniquely substituted alkylamine derivatives containing m  ...[more]

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