Facile preparation of N-protected 2-alkylidene-1,3-imidazolidines
摘要:
Stereoselective preparation of unsymmetrically protected 2-alkylidene-1,3-imidazolidines was achieved by the reaction of N,N'-protected ethylenediamine, bromopropynamide, and K(3)PO(4) in hot DMF. When N-protected aminoethanol was used in place of the protected ethylenediamine, an oxazolidine derivative was produced. (C) 2008 Elsevier Ltd. All rights reserved.