申请人:The Board of Trustees of the University of Illinois
公开号:US20160272662A1
公开(公告)日:2016-09-22
The invention provides novel manganese catalysts such as [Mn(
t
BuPc)], which are general for the amination of all types of C(sp
3
)-H bonds (aliphatic, allylic, propargylic, benzylic, ethereal), including strong 1
o
aliphatic C—H bonds, while achieving excellent chemoselectivity, stereospecificity, and high functional group tolerance. We demonstrate the late-stage diversification of bioactive complex molecules that encompass the range of C(sp
3
)-H bond types, such as selective 1
o
C—H aminations of betulinic acid and pleuromutilin derivatives. The catalysts' unprecedented balance of reactivity and selectivity is in part attributed to its mechanism of C—H amination that lies between stepwise and concerted.
本发明提供了新型的锰催化剂,例如[Mn(tBuPc)],适用于所有类型的C(sp3)-H键的氨化反应(脂肪族、烯丙基、丙炔基、苄基、醚基),包括强1o脂肪族C-H键,同时实现了优异的化学选择性、立体特异性和高官能团耐受性。我们展示了生物活性复合分子的后期多样化,其中包括C(sp3)-H键类型范围,例如对苦杏酸和扁柏霉素衍生物的选择性1oC-H氨化反应。该催化剂在反应性和选择性方面的前所未有的平衡部分归因于其C-H氨化机理介于逐步和协同之间。