Construction of Benzopolycycles via Pd-Catalyzed Intermolecular Cyclization of 2,7-Alkadiynylic Carbonates with Terminal Propargyl Tertiary Alcohols
                                
                                    
                                        作者:Yuchen Zhang、Chunling Fu、Xin Huang、Shengming Ma                                    
                                    
                                        DOI:10.1021/acs.orglett.9b00746
                                    
                                    
                                        日期:2019.5.17
                                    
                                    A palladium-catalyzed highly regioselective and chemoselective intermolecular cyclization of 2,7-alkadiynylic carbonates with terminal propargyl tertiary alcohols to construct benzopolycycles containing furan and pyrrole moieties has been developed with a very broad scope. Polycycles containing spirane structures or dispirane structures could be also smoothly synthesized in moderate to good yields. The reaction enjoys excellent regioselectivity.