TITANIUM-CATALYZED HYDROAMINOALKYLATION;
C(SP(3))-H ALPHA-ALKYLATION;
H BOND ACTIVATION;
NITROGEN ATOM;
UNACTIVATED OLEFINS;
AMIDATE COMPLEXES;
SECONDARY-AMINES;
SUBSTRATE SCOPE;
HYDROAMINATION;
ADJACENT;
D O I:
10.1021/ja506187m
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
The design and synthesis of a mixed 2-pyridonate-Ta(NMe2)(3)Cl complex for the direct C-H alkylation adjacent to nitrogen in unprotected secondary amines are reported. The hydroaminoalkylation of sterically demanding internal alkenes gives the direct, catalytic formation of C(sp(3))-C(sp(3)) bonds. Substrate scope investigations reveal key strategies for further catalyst development efforts in this 100% atom-economic synthesis of alpha-alkylated amines.