A Novel Type of Chiral Triangulane-Based Diphosphane Ligands for Transition Metals
作者:Alexander F. Khlebnikov、Sergei I. Kozhushkov、Dmitry S. Yufit、Heiko Schill、Michael Reggelin、Volker Spohr、Armin de Meijere
DOI:10.1002/ejoc.201101715
日期:2012.3
backbone has been elaborated and executed for several representative enantiomerically pure ligands. Thus,(1R,3S,4S)-1,4-bis[(diphenylphosphanyl)methyl]spiro[2.2]pentane [(1R,3S,4S)-24·(BH3)2], [(1R,3R,4S)-4-(diphenylphosphanyl)methylspiro[2.2]pentan-1-yl]diphenylphosphane [(1R,3R,4S)-27·(BH3)2], [(1R,3R,4S,5R)-5-(diphenylphosphanyl)methyldispiro[2.0.2.1]heptan-1-yl]diphenylphosphane [(1R,3R,4S,5R)-30·(BH3)2]
一种用于合成具有刚性三角骨架的轴向和螺旋手性双齿二膦配体的新原创策略已被阐述并用于几种代表性的对映体纯配体。因此,(1R,3S,4S)-1,4-双[(二苯基膦酰基)甲基]螺[2.2]戊烷[(1R,3S,4S)-24·(BH3)2],[(1R,3R,4S) )-4-(二苯基膦基)甲基螺[2.2]戊-1-基]二苯基膦[(1R,3R,4S)-27·(BH3)2], [(1R,3R,4S,5R)-5-(二苯基膦基)甲基二螺[2.0.2.1]庚烷-1-基]二苯基膦[(1R,3R,4S,5R)-30·(BH3)2], (1S,3S,4S)-1,4-双(二苯基膦基)螺戊烷[(1R,3S,4S)-35·(BH3)2], (1S,3S,4S)-1,4-双(二苯基膦酰基)螺戊烷[(1S,3S,4S)-35·(BH3)2] , (1S,3S,4S)-1,4-双(二苯基膦酰基)螺戊烷[(1R,3R,4S)-35·(BH3)2],和(1R