Palladium(0)-Catalyzed Arylative Dearomatization of Phenols
摘要:
The palladium-catalyzed arylative dearomatization of phenols to yield spirocyclohexadienone products in good to excellent yields has been developed. Preliminary results demonstrate that the formation of the spirocyclic all-carbon quaternary center can be accomplished with high levels of enantiocontrol (up to 91% ee).
Hf(OTf)<sub>4</sub>-Catalyzed highly diastereoselective synthesis of 1,3-disubstituted tetralin derivatives via benzylic C(sp<sup>3</sup>)–H bond functionalization
作者:Taira Yoshida、Keiji Mori
DOI:10.1039/c7cc01717k
日期:——
A highly diastereoselective synthesis of 1,3-disubstituted tetralin derivatives was achieved via Hf(OTf)4-catalyzed benzylic C(sp3)-H bond functionalization.
catalyzed atroposelective Friedlander reaction was developed in which acetylacetone and a variety of 2′-substituted 2-aminobenzophenones were successfully employed to give optically active biaryl quinolines in good yields and with high enantioselectivities.
5-benzoheptatrienyl metalcompounds 1a−m by treatment with KO-t-Bu as base. These metalcompounds undergo the various types of reactions in good yields and exclusively depending on the nature of substituents R1 and R3. Thus, metalcompounds 1a−c carrying alkyl substituents R1 and R3 form 3H-benzodiazepines 6a−c after electrophilic quench of the intermediate cyclic anion 7 in a 7-endo-trig electrocyclic reaction with