作者:Ken Tanaka、Yayoi Sawada、Yusuke Aida、Maliny Thammathevo、Rie Tanaka、Hiromi Sagae、Yousuke Otake
DOI:10.1016/j.tet.2009.12.042
日期:2010.2
studies indicated that the present rhodium-catalyzed [2+2+2] cycloaddition proceeds through the rhodacyclopentadiene intermediate generated by oxidative coupling of a diyne with rhodium. On the other hand, in the reactions of diynes and dimethyl acetylenedicarboxylate, the rhodacyclopentadiene intermediate generated by oxidative coupling of a diyne and a monoyne with rhodium would also be involved
阳离子铑(I)/ H 8在温和的反应条件下已经完成了功能化四氢萘的便捷合成和聚合反应-BINAP配合物与功能化单炔的1,2-辛二炔衍生物的[2 + 2 + 2]环加成反应。研究了二炔系链长度的影响,结果表明1,6-庚二炔和1,7-辛二炔的反应性高于1,8-壬二炔。机理研究表明,目前的铑催化的[2 + 2 + 2]环加成反应是通过二炔与铑的氧化偶联生成的Rhodacyclopentadiene中间体进行的。另一方面,在二炔和乙炔二甲酸二甲酯的反应中,还涉及由二炔和单炔与铑的氧化偶联产生的若丹环戊二烯中间体。