Titanium(IV) chloride promoted condensation of ortho-aminonitriles with δ-valerolactone
                                
                                    
                                        作者:Manoj C. Desai、Peter F. Thadeio                                    
                                    
                                        DOI:10.1016/s0040-4039(01)93747-5
                                    
                                    
                                        日期:1989.1
                                    
                                    The condensation of vicinal alicyclic or aromatic ortho-aminonitriles with δ-valerolactone is promoted by titanium(IV) chloride at room temperature in the presence of triethylamine to afford substituted 2,3-dihydropyrano[2,3-]pyridines. These compounds are potentially useful as memory enhancing agents.
                                    在室温下,在
三乙胺的存在下,
氯化
钛(IV)促进邻位脂环族或芳族邻
氨基腈与
δ-戊内酯的缩合,得到取代的
2,3-二氢吡喃并[2,3- ]
吡啶。这些化合物潜在地用作记忆增强剂。