4.4 Article

Efficient highly diastereoselective synthesis of 1,8a-dihydro-7H-imidazo[2,1-b][1,3]oxazines

Journal

TETRAHEDRON
Volume 62, Issue 14, Pages 3435-3438

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2006.01.048

Keywords

diastereoselective synthesis; pyridine carboxaldehydes; acetylenic esters; 1-alkyl imidazoles; 1,8a-dihydro-7H-imidazo[2,1-b][1,3]oxazines

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1-Alkyl imidazoles react smoothly with dialkyl acetylenedicarboxylates in the presence of pyridine carboxaldehydes to diastereoselectively produce 1,8a-dihydro-7H-imidazo[2,1-b][1,3]oxazine derivatives in excellent yields. (c) 2006 Elsevier Ltd. All rights reserved.

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