A Concise Preparation of Yuehchukene and Its Analogues
摘要:
The palladium catalyzed carbonylative cross-coupling reaction of indolylborates (2) with vinyl triflates (3) afforded indol-2-yl ketones (4), which were subsequently converted to hexahydroindeno[2,1-b]indoles (5) with the aid of an acid. This protocol was well adapted for the total synthesis of yuehchukene.
Total synthesis of yuehchukene could be realized through the palladium catalyzed carbonylative cross-coupling reaction of indolylborate (2 b) with cyclohexadienyl triflate (9) as a key reaction.