57918-64-6Relevant articles and documents
Catalytic Asymmetric Synthesis of Atropisomeric Quinolines through the Friedl?nder Reaction
Hu, Xingena,Jiang, Jun,Lan, Yunjun,Li, Juan,Li, Xinhua,Liu, Hongxin,Wan, Junlin,Xiao, Hong-Ping
supporting information, p. 2198 - 2202 (2019/11/25)
A phosphoric acid catalyzed atroposelective Friedl?nder 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.
Construction of dibenzo-fused seven- to nine-membered carbocycles via Bronsted acid-promoted intramolecular Friedel - Crafts-type alkenylation
Otani, Takashi,Ueki, Kanako,Cho, Kinryo,Kanai, Kan,Tateno, Kotaro,Saito, Takao
, p. 7895 - 7898 (2015/05/13)
Bronsted acid-promoted intramolecular hydroarylation of alkynylbenzenes carrying an arylalkyl group at the ortho-position leads to alkylidenedibenzo[a,d]cycloheptenes, -octenes and -nonenes in up to quantitative yield with complete regioselectivity. The scope and limitation of this reaction and application to the synthesis of tricyclic antidepressants are described.
Iridium-catalyzed borylation of secondary benzylic C-H bonds directed by a hydrosilane
Cho, Seung Hwan,Hartwig, John F.
supporting information, p. 8157 - 8160 (2013/07/05)
Most functionalizations of C-H bonds by main-group reagents occur at aryl or methyl groups. We describe a highly regioselective borylation of secondary benzylic C-H bonds catalyzed by an iridium precursor and 3,4,7,8-tetramethyl-1, 10-phenanthroline as the ligand. The reaction is directed to the benzylic position by a hydrosilyl substituent. This hydrosilyl directing group is readily deprotected or transformed to other functional groups after the borylation reaction, providing access to a diverse set of secondary benzylboronate esters by C-H borylation chemistry.