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The stereoselective birch reduction of pyrroles
Published 1999“…The Birch reduction has been applied to electron-deficient pyrroles substituted with a chiral auxiliary at the C-2 position. …”
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The birch reduction of 3-substituted pyrroles
Published 1998“…The Birch reduction of electron-deficient 3-substituted pyrroles is described. …”
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Silyl substituted furans in the stereoselective Birch reduction
Published 2001“…Chiral derivatives of 3-silyl-2-furoic acid were prepared and subjected to a Birch reductive alkylation reaction. It was found that the presence of a silicon atom, ortho to the chiral auxiliary, enabled the synthesis of dihydrofurans with high levels of stereoselectivity. …”
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The partial reduction of heterocycles: an alternative to the Birch reduction
Published 2000Journal article -
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Synthesis of substituted piperidines by the birch reduction of aromatic heterocycles.
Published 2000Journal article -
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Stereoselectivity in the birch reduction of 2-furoic acid derivatives
Published 1998“…The preparation and Birch reduction of chiral 3-methyl-2-furoic acid derivatives is described. …”
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Rearrangement of pyrrolines derived from the Birch reduction of electron-deficient pyrroles: radical ring-expansion to substituted tetrahydropyridines.
Published 2004“…Access to the synthetically important tetrahydropyridine motif has been achieved by radical rearrangement of pyrrolines obtained from the Birch reduction of electron-deficient pyrroles.…”
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Rearrangement of pyrrolines derived from the Birch reduction of electron-deficient pyrroles: Radical ring-expansion to substituted tetrahydropyridines
Published 2004“…Access to the synthetically important tetrahydropyridine motif has been achieved by radical rearrangement of pyrrolines obtained from the Birch reduction of electron-deficient pyrroles.…”
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Low-temperature sonoelectrochemical processes Part 2: Generation of solvated electrons and Birch reduction processes under high mass transport conditions in liquid ammonia
Published 2001“…The fast mass transport and mixing induced by power ultrasound is then used to monitor the homogeneous Birch reduction process facilitated by the addition of ethanol as a proton source. …”
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α,β-Doymamış Karbonil Bileşiklerin ve Gerilimli Alkenlerin Ilıman Şartlarda İndirgenmesi
Published 2024-05-01Subjects: Get full text
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The partial reduction of electron-deficient pyrroles: procedures describing both Birch (Li/NH3) and ammonia-free (Li/DBB) conditions.
Published 2007“…The ammonia-free conditions described herein are particularly useful for reactions requiring the use of reactive electrophiles, such as acid chlorides or enolizable aldehydes, which are incompatible with the standard Birch reduction conditions. The reaction procedure for the ammonia Birch reduction (procedure A) takes about 9.5 h to complete. …”
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Stereoselectivity in the double reductive alkylation of pyrroles: synthesis of cis-3,4-disubstituted pyrrolidines
Published 1999“…The preparation and Birch reduction of a 1,3,4-tri-substituted pyrrole is described: the heterocycle is loaded with electron-withdrawing groups and undergoes a double reductive alkylation reaction to yield cis-3,4-disubstituted pyrrolidines.…”
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The synthesis of (+)-nemorensic acid
Published 2000“…The synthesis of (+)-nemorensic acid in nine steps is described; key steps in the route were the stereoselective Birch reduction of a substituted furan, and addition of allyltrimethylsilane to an oxonium ion at C-5; an X- ray crystal structure of (-)-nemorensic acid provided proof of the relative stereochemistry of the target.…”
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Asymmetric synthesis of the fully elaborated pyrrolidinone core of oxazolomycin A.
Published 2012“…Principal features include the Birch reduction of an aromatic pyrrole nucleus, a late stage RuO(4) catalyzed pyrrolidine oxidation, and a highly diastereoselective organocerium addition to an aldehyde.…”
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Partial reduction of electron-deficient pyridines
Published 2000“…Mono- and disubstituted pyridines can be transformed into functionalized dihydropyridines using either Birch reduction conditions or sodium/naphthalene in THF. …”
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