Enantioselective Synthesis of 5,7-Bicyclic Ring Systems from Axially Chiral Allenes Using a Rh(I)-Catalyzed Cyclocarbonylation Reaction
作者:Francois Grillet、Kay M. Brummond
DOI:10.1021/jo4002432
日期:2013.4.19
pattern of the allene affected the transfer of chiral information. Complete transfer of chirality was obtained for all trisubstituted allenes, but loss of chiral information was observed for disubstituted allenes. This work constitutes the first demonstration of a transfer of chiral information from an allene to the 5-position of a cyclopentenone using a cyclocarbonylation reaction. The absolute configuration
描述了分子内 Rh(I) 催化的联烯 Pauson–Khand 反应 (APKR) 中的手性转移,以对映选择性地获得四氢甘菊酮、四氢环戊[ c ]氮杂酮和二氢环戊[ c ]氧杂环庚酮 (22-99% ee)。丙二烯的取代模式影响手性信息的传递。所有三取代丙二烯均获得了手性的完全转移,但二取代丙二烯观察到手性信息丢失。这项工作首次证明了利用环羰基化反应将手性信息从丙二烯转移到环戊烯酮的 5 位。相应的环羰基化产物的绝对构型也被确定,这是很少有人做到的。