A new approach towards 1-phenyl and 1-benzyl substituted 2-(aminomethyl)cyclopropanecarboxamides as novel derivatives of the antidepressant Milnacipran
作者:Karel Vervisch、Matthias D'hooghe、Karl W. Törnroos、Norbert De Kimpe
DOI:10.1039/b904611a
日期:——
2-(2-Cyano-2-phenylethyl)aziridines were converted into novel trans-2-aminomethyl-1-phenylcyclopropanecarboxamides via regiospecific ring opening and 3-exo-tet cyclisation, thus providing the first convenient entry into the trans-isomer of Milnacipran as a useful template for further derivatisation. Furthermore, unprecedented 2-aminomethyl-1-benzylcyclopropanecarboxamides have been synthesized using
Synthesis of Stereodefined Piperidines from Aziridines and Their Transformation into Conformationally Constrained Amino Acids, Amino Alcohols and 2,7-Diazabicyclo[3.3.1]nonanes
作者:Karel Vervisch、Matthias D’hooghe、Karl W. Törnroos、Norbert De Kimpe
DOI:10.1021/jo101646u
日期:2010.11.19
2-(2-Cyano-2-phenylethyl)azindines were converted into novel cis- and trans-2-chloromethyl-4-phenylpiperidine-4-carbonitriles via alkylation with 1-bromo-2-chloroethane followed by microwave-assisted 6-exo-tet cyclization and regiospecific ring opening The latter piperidines were used as eligible substrates for the synthesis of stereodefined 2-chloromethyl-, 2-hydroxymethyl-, and 2-carboxymethyl-4-phenylpiperidine-4-carboxylic acids, 2-hydroxymethyl-4-phenylpiperidine-4-carbonitriles, 3-hydroxy-5-phenylazepane-5-carbonitriles, and 5-phenyl-2,7-diazabicyclo[3 3 1]nonanes
LiAlH<sub>4</sub>
-Induced Selective Ring Rearrangement of 2-(2-Cyanoethyl)aziridines toward 2-(Aminomethyl)pyrrolidines and 3-Aminopiperidines as Eligible Heterocyclic Building Blocks
作者:Jeroen Dolfen、Karel Vervisch、Norbert De Kimpe、Matthias D'hooghe
DOI:10.1002/chem.201504853
日期:2016.3.24
2‐aryl‐3‐(2‐cyanoethyl)aziridines were deployed as substrates for an In(OTf)3‐mediated regio‐ and stereoselective ring rearrangement upon treatment with LiAlH4, affording a variety of novel 2‐(aminomethyl)pyrrolidines and 3‐aminopiperidines, respectively. Further synthetic elaboration of the obtained 3‐aminopiperidines resulted in the formation of a peculiar and unexplored conformationally constrained
Cobalt carbonyl-catalyzed carbonylation of functionalized aziridines to versatile β-lactam building blocks
作者:Nicola Piens、Kristof Van Hecke、Dieter Vogt、Matthias D'hooghe
DOI:10.1039/c7ob00832e
日期:——
carbonylation of different classes of non-activated aziridines with diverse substitution patterns was investigated. Special attention was devoted to selectivity issues and reaction optimization. This study resulted in the regio- and stereospecific synthesis of 24 novel β-lactam target structures in high yields on a multigram scale. The synthetic potential of the newly obtained azetidin-2-ones was illustrated