2-(((R)-2,8-dimethyl-2-((4R,8R)-4,8,12-trimethyltridecyl)chroman-6-yl)oxy)acetonitrile 、
dimethyl 2,2-di(but-2-yn-1-yl)malonate 在
bis(1,5-cyclooctadiene)nickel (0) 、
4,5-双二苯基膦-9,9-二甲基氧杂蒽 作用下,
以
甲苯 为溶剂,
以94%的产率得到dimethyl 3-((((R)-2,8-dimethyl-2-((4R,8R)-4,8,12-trimethyltridecyl)chroman-6-yl)oxy)methyl)-1,4-dimethyl-5H-cyclopenta[c]pyridine-6,6(7H)-dicarboxylate