Terminal oxazolinyloxiranes: synthesis, reaction with amines and regioselective β-lithiation
摘要:
The synthesis of terminal oxazolinyloxiranes, even in enantioenriched form, has been performed by Darzens-type reaction of lithiated chloroalkyloxazolines with benzotriazolylmethanol (BtCH(2)OH) or by chloromethylation of 2-acyl-2-oxazolines. The synthetic utility of such oxiranes based on their ability to act either as electrophiles, undergoing ring-opening reactions with nucleophiles, or as nucleophiles in form of the oxiranyl anions, generated by stereoselective beta-deprotonation, has been investigated. (C) 2009 Elsevier Ltd. All rights reserved
Terminal oxazolinyloxiranes: synthesis, reaction with amines and regioselective β-lithiation
摘要:
The synthesis of terminal oxazolinyloxiranes, even in enantioenriched form, has been performed by Darzens-type reaction of lithiated chloroalkyloxazolines with benzotriazolylmethanol (BtCH(2)OH) or by chloromethylation of 2-acyl-2-oxazolines. The synthetic utility of such oxiranes based on their ability to act either as electrophiles, undergoing ring-opening reactions with nucleophiles, or as nucleophiles in form of the oxiranyl anions, generated by stereoselective beta-deprotonation, has been investigated. (C) 2009 Elsevier Ltd. All rights reserved
Zincation of 4,4-dimethyloxazoline using TMPZnCl·LiCl. A new preparation of 2-aryloxazolines
作者:Diana Haas、Maximilian S. Hofmayer、Tomke Bresser、Paul Knochel
DOI:10.1039/c5cc01144b
日期:——
4,4-Dimethyloxazoline is directly zincated using TMPZnCl·LiCl and further functionalized by Pd-catalyzed cross-couplings, as well as Cu-mediated acylation and allylation reactions.
The synthesis of terminal oxazolinyloxiranes, even in enantioenriched form, has been performed by Darzens-type reaction of lithiated chloroalkyloxazolines with benzotriazolylmethanol (BtCH(2)OH) or by chloromethylation of 2-acyl-2-oxazolines. The synthetic utility of such oxiranes based on their ability to act either as electrophiles, undergoing ring-opening reactions with nucleophiles, or as nucleophiles in form of the oxiranyl anions, generated by stereoselective beta-deprotonation, has been investigated. (C) 2009 Elsevier Ltd. All rights reserved