1959
DOI: 10.1021/ja01518a048
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The Isomerization of Some 1-Aroylaziridines. II

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Cited by 73 publications
(20 citation statements)
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“…Both regioisomers of oxazoline can be produced in high yield with excellent enantioselectivity depending on reaction conditions. Treatment of ( R )‐ 5 with catalytic sodium iodide leads to oxazoline 9 by Heine rearrangement12a without loss of enantiopurity (Scheme ). Alternatively, triflic acid (TfOH) catalyzes the regioisomeric rearrangement to oxazoline 6 11c.…”
Section: Methodsmentioning
confidence: 99%
“…Both regioisomers of oxazoline can be produced in high yield with excellent enantioselectivity depending on reaction conditions. Treatment of ( R )‐ 5 with catalytic sodium iodide leads to oxazoline 9 by Heine rearrangement12a without loss of enantiopurity (Scheme ). Alternatively, triflic acid (TfOH) catalyzes the regioisomeric rearrangement to oxazoline 6 11c.…”
Section: Methodsmentioning
confidence: 99%
“…Um outro procedimento bastante empregado para a obtenção destes compostos envolve a reação de um iminoéter (na forma de seu sal hidroclorídrico) ou um ortoéster com β-aminoálcoois 12,13 (Esquema 3). Várias outras metodologias de obtenção de 2-oxazolinas podem ser encontradas na literatura como as que utilizam hidroxiamidas [14][15][16][17] e eneamidas [18][19][20] como material de partida, além de processos envolvendo amidotelurinilação de alcenos 21 , abertura de epóxidos [22][23][24] , abertura de N-acilaziridinas 25 , reação de aldeídos com isocianetos 26 , reações pericíclicas [27][28][29] , entre outras.…”
Section: Esquema 1 Esquema 2 Esquemaunclassified
“… 26 Subsequently, Heine’s group also explored mild Lewis base catalysts for the rearrangement reaction that now bears his name. 27 − 30 Chiral N -acylaziridines can undergo stereospecific rearrangement to enantioenriched oxazolines under Lewis acid catalysis, 19 , 31 34 and a mechanism for this process has been proposed. 35 , 36 meso - N -Acylaziridines offer the opportunity to control the absolute stereochemistry during oxazoline formation by enantioselective catalysis; however, only racemic oxazolines have been produced by a direct Lewis acid-catalyzed Heine reaction.…”
mentioning
confidence: 99%