Synthesis of 2-oxazolines mediated by N,N′-diisopropylcarbodiimide
作者:Stefano Crosignani、Abigail C. Young、Bruno Linclau
DOI:10.1016/j.tetlet.2004.10.143
日期:2004.12
N-(beta-Hydroxy)amides can be cyclised by reaction with diisopropy1carbodiimide (DIC) to give the corresponding 2-oxazolines in high yields. The reaction requires only very mild Lewis-acid catalysis (5mol% Cu(OTf)(2)) and can be accomplished with simple heating, or in very short reaction times under microwave irradiation. (C) 2004 Elsevier Ltd. All rights reserved.
ARDABILCHI N.; FITTON A. O.; FROST J. R.; OPPONG-BOACHIE F. K.; HADI A. H+, J. CHEM. SOC. PERKIN TRANS., PART 1, 1979, NO 2, 539-543
作者:ARDABILCHI N.、 FITTON A. O.、 FROST J. R.、 OPPONG-BOACHIE F. K.、 HADI A. H+
DOI:——
日期:——
Synthesis of N<sub>4</sub>-substituted[1,3,4]oxadiazinan-2-ones derived from norephedrine
作者:David M. Casper、George P. Nora、Jennifer R. Blackburn、Jeromy T. Bentley、Deanna C. Taylor、Shawn R. Hitchcock
DOI:10.1002/jhet.5570390431
日期:2002.7
[1,3,4]-Oxadiazinan-2-ones bearing substitution at the N4-position have been synthesized fromnorephedrine in good yield via N-alkylation, nitrosation, reduction and cyclization.