Rh-Catalyzed [7 + 1] Cycloaddition of Buta-1,3-dienylcyclopropanes and CO for the Synthesis of Cyclooctadienones
作者:Zhong-Ke Yao、Jianjun Li、Zhi-Xiang Yu
DOI:10.1021/ol102700m
日期:2011.1.7
advance transition-metal-catalyzed cycloadditions for the synthesis of various-sized ring compounds. A new seven-carbon building block from buta-1,3-dienylcyclopropanes (BDCPs) has been developed, showing that, under the catalysis of [Rh(CO)2Cl]2, BDCPs react with CO to give [7 + 1] cycloaddition products, cyclooctadienones. The present [7 + 1] reaction provides an efficient entry to the synthetically
发现新的碳结构单元对于促进过渡金属催化的环加成反应对于合成各种尺寸的环化合物非常重要。已开发出一种由丁-1,3-二烯基环丙烷(BDCP)构成的新的七碳结构单元,表明在[Rh(CO)2 Cl] 2的催化下,BDCP与CO反应生成[7 + 1]环加成产物,环辛二烯酮。目前的[7 +1]反应为进入具有挑战性的八元碳环骨架提供了有效途径,该骨架存在于许多具有医学和生物学意义的天然产物中。