Frustrated Lewis pair;
Hydrogen activation;
Hydrogenation;
Lewis acids;
Lewis bases;
Protodeborylation;
HETEROLYTIC DIHYDROGEN ACTIVATION;
ELECTROPHILIC PHOSPHONIUM CATIONS;
METAL-FREE HYDROGENATION;
BOND ACTIVATION;
STRUCTURAL FEATURES;
ELECTRONIC CONTROL;
LONDON DISPERSION;
H-2;
ACTIVATION;
CHEMISTRY;
CARBON;
D O I:
10.1002/ejoc.201800944
中图分类号:
O62 [有机化学];
学科分类号:
070303 ;
081704 ;
摘要:
This review summarizes the principle reaction mechanisms of frustrated Lewis pairs (FLP) in hydrogenations and carbon-nitrogen and carbon-carbon bond forming reactions. The fundamental mechanism of hydrogen activation by FLPs is reviewed and the influence of the FLP's nature on hydrogenation reactions is discussed, leading to a structure-reactivity relationship in phosphine/borane or amine/borane derived FLPs. This reactivity concept is validated for a series of FLP-catalyzed reactions. Furthermore, alternative reaction mechanisms e.g. protodeborylations or sigma-bond metathesis are discussed.