Literature DB >> 23320852

Synthesis of isoquinuclidines from highly substituted dihydropyridines via the Diels-Alder reaction.

Rhia M Martin1, Robert G Bergman, Jonathan A Ellman.   

Abstract

A stereo- and regioselective Diels-Alder reaction for the synthesis of highly substituted isoquinuclidines from dihydropyridines and electron-deficient alkenes has been developed. While reactions with activated dienophiles proceed readily under thermal conditions, the use of Lewis acid additives is necessary to facilitate cycloadditions for less reactive alkenes. This procedure affords the target compounds in high yields and diastereoselectivities.

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Year:  2013        PMID: 23320852      PMCID: PMC3570756          DOI: 10.1021/ol303040r

Source DB:  PubMed          Journal:  Org Lett        ISSN: 1523-7052            Impact factor:   6.005


  35 in total

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6.  Stereoselective synthesis of 2,3,6-trisubstituted tetrahydropyridines via Tf(2)O-mediated Grob fragmentation: access to indolizidines (-)-209I and (-)-223J.

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7.  Total synthesis of (+)-lepadin B: stereoselective synthesis of nonracemic polysubstituted hydroquinolines using an RC-ROM process.

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8.  A convenient domino access to substituted alkyl 1,2-dihydropyridine-3-carboxylates from propargyl enol ethers and primary amines.

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9.  Cross-dehydrogenative coupling (CDC): exploring C-C bond formations beyond functional group transformations.

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10.  Silver ion-induced Grob fragmentation of gamma-amino iodides: highly stereoselective synthesis of polysubstituted piperidines.

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  6 in total

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Review 2.  Rhodium-Catalyzed C-H Alkenylation/Electrocyclization Cascade Provides Dihydropyridines That Serve as Versatile Intermediates to Diverse Nitrogen Heterocycles.

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Journal:  Acc Chem Res       Date:  2021-03-19       Impact factor: 22.384

3.  Stereoselective synthesis of isoquinuclidines through an aza-[4 + 2] cycloaddition of chiral cyclic 2-amidodienes.

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Review 4.  Preparative Synthesis of Highly Substituted Tetrahydropyridines via a Rh(I)-Catalyzed C-H Functionalization Sequence.

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Journal:  Org Process Res Dev       Date:  2014-08-29       Impact factor: 3.317

Review 5.  Convergent Synthesis of Diverse Tetrahydropyridines via Rh(I)-Catalyzed C-H Functionalization Sequences.

Authors:  Tehetena Mesganaw; Jonathan A Ellman
Journal:  Org Process Res Dev       Date:  2014-08-29       Impact factor: 3.317

6.  A General Iridium-Catalyzed Reductive Dienamine Synthesis Allows a Five-Step Synthesis of Catharanthine via the Elusive Dehydrosecodine.

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  6 in total

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