Racemization-Free Synthesis of Morpholinone Derivatives from α-Amino Acids
摘要:
A simple strategy is reported for the synthesis of chiral N-protected morpholinone derivatives by a base (potassium carbonate)-mediated cyclization reaction of N-protected -amino acids with 1,2-dibromoethane. The morpholinone derivatives are obtained in good yields and in enantiomerically pure forms.
Simple and Efficient One Pot Synthetic Protocol to Construct Morpholin-2-ones
作者:Chung-Ming Sun、Mukund K. Gurjar、Gorakh S. Yellol、Debendra K. Mohapatra
DOI:10.3987/com-10-s(e)14
日期:——
A new one pot synthetic method to construct 3-substituted morpholine-2-one derivatives is presented. Amino acids refluxed with 1,2-dibromoethane and potassium carbonate in acetonitrile followed by treatment with benzyl bromide in same pot furnished the 3-substituted N-benzyl-morpholine-2-ones in good yields. The simplicity of the reaction conditions and versatility of resulted scaffold to generate wide variety of molecules makes this method more attractive for synthetic organic chemists.
KASHIMA, CHOJI;HARADA, KAZUO, J. ORG. CHEM., 54,(1989) N, C. 789-792