Asymmetric Hydroformylation of an Enantiomerically Pure Bicyclic Lactam: Efficient Synthesis of Functionalised Cyclopentylamines
作者:Gary M. Noonan、Christopher J. Cobley、Tomas Lebl、Matthew L. Clarke
DOI:10.1002/chem.201002233
日期:2010.11.15
Customising a bicycle: Rh‐catalysed asymmetric hydroformylation of a bicyclic lactam, 2‐azabicyclo‐[2.2.1]hept‐5‐en‐3‐one, was investigated. The use of a chiral diphosphite ligand, (R,R)‐Kelliphite, enables excellent selectivity towards one regioisomer combined with excellent productivity and perfect exo selectivity. The products are versatile precursors to highly desired functionationalised cyclopentylamines
定制自行车:研究了Rh催化的双环内酰胺2-氮杂双环[[2.2.1] hept-5-en-3-one的不对称加氢甲酰化反应。使用手性二亚磷酸酯配体(R,R)‐硬石,可以实现对一种区域异构体的出色选择性,并具有出色的生产率和完美的exo选择性。该产品是高度期望的官能化环戊胺的多功能前体(参见方案)。