Synthesis of 9-Aryl-9,10-dihydrophenanthrenes by Domino [3+3] Annulation/Ring-Opening/Friedel-Crafts Alkylation Reactions of 1,3-Bis(trimethylsilyloxy)-1,3-butadienes with 3-Aroyl-5-aryl-4,5-dihydrofurans
The reaction of 1,3-bis(trimethylsilyloxy)-1,3-butadienes with 3-benzoyl-5-aryl-4,5-dihydrofurans, available by CAN-mediated reaction of styrenes with benzoylacetones, afforded functionalized 9,10-dihydrophenanthrenes. These reactions proceed by a novel domino [3+3] cyclization/ring-opening/Friedel-Craftsalkylation process.
1,3-双(三甲基甲硅烷氧基)-1,3-丁二烯与 3-苯甲酰基-5-芳基-4,5-二氢呋喃的反应,可通过苯乙烯与苯甲酰丙酮的 CAN 介导反应获得,得到官能化的 9,10-二氢菲. 这些反应通过新型多米诺 [3+3] 环化/开环/Friedel-Crafts 烷基化过程进行。