名称:
                                A facile synthesis of 4-methylene-1,3-oxazolidines from γ-hydroxybutynoate and N-tosylimines
                             
                            
                                摘要:
                                Both nucleophilic and basic catalysts have been used to promote the cyclization reactions between gamma-hydroxybutynoate and N-tosylimines to afford 4-methylene-1,3-oxazolidines in good yields. E- and Z-isomers of the final products have been isolated and characterized by NMR spectroscopy and X-ray data. (C) 2009 Elsevier Ltd. All rights reserved.
                             
                                                            
                                    DOI:
                                    10.1016/j.tetlet.2009.06.009