100914-80-5Relevant articles and documents
Asymmetric Hydrogenation of Dibenzo[ c,e]azepine Derivatives with Chiral Cationic Ruthenium Diamine Catalysts
Zhang, Shanshan,Chen, Fei,He, Yan-Mei,Fan, Qing-Hua
supporting information, p. 5538 - 5541 (2019/08/01)
An efficient Ru-catalyzed asymmetric hydrogenation of dibenzo[c,e]azepines is reported. A series of seven-membered cyclic amines were obtained with moderate to excellent enantioselectivity. The catalyst counteranion played an important role in achieving high-level chiral induction. Moreover, a one-pot synthesis of chiral 6,7-dihydro-5H-dibenz[c,e]azepines via two-step reductive amination was also developed.
Catalyst-free intramolecular formal carbon insertion into σ-C-C bonds: A new approach toward phenanthrols and naphthols
Xia, Ying,Qu, Peiyuan,Liu, Zhenxing,Ge, Rui,Xiao, Qing,Zhang, Yan,Wang, Jianbo
supporting information, p. 2543 - 2546 (2013/04/10)
The different reactivity of two kinds of carbonyl groups in keto aldehyde substrates has been exploited for the synthesis of phenanthrols, naphthols, and their heteroatom-containing analogues. Key to this highly efficient and robust methodology is the catalyst-free intramolecular formal diazo carbon insertion of N-tosylhydrazones into keto C-C bonds (see scheme). Copyright
Rhodium(II)-catalyzed cyclization of bis(N-tosylhydrazone)s: An efficient approach towards polycyclic aromatic compounds
Xia, Ying,Liu, Zhenxing,Xiao, Qing,Qu, Peiyuan,Ge, Rui,Zhang, Yan,Wang, Jianbo
supporting information; experimental part, p. 5714 - 5717 (2012/07/28)
Ahead of the PAC: Polycyclic aromatic compounds (PACs) can be easily accessed by the combination of Suzuki-Miyaura cross-coupling and a [Rh 2(OAc)4]-catalyzed carbene reaction using easily available bis(N-tosylhydrazone)s as intermediates (see scheme; Ts=4-toluenesulfonyl). Copyright
Efficient synthesis of dibenzo[a,c]cyclohepten-5-ones via a sequential Suzuki-Miyaura coupling and aldol condensation reaction
Young, Lok Choi,Yu, Chan-Mo,Bum, Tae Kim,Heo, Jung-Nyoung
supporting information; experimental part, p. 3948 - 3951 (2009/11/30)
(Chemical Equation Presented) A common strategy for the synthesis of a 7-membered-ring system with a Suzuki-Miyaura coupling followed by an acid/base-promoted intramolecular aldol condensation reaction has been developed. The reaction of 2′-bromoacetophen
Thiazolium ylide-catalyzed intramolecular aldehyde-ketone benzoin-forming reactions: Substrate scope
Hachisu, Yoshifumi,Bode, Jeffrey W.,Suzuki, Keisuke
, p. 1097 - 1100 (2007/10/03)
The scope and limitations of intramolecular benzoin-forming reactions of aldehydes and ketones catalyzed by the combination of a thiazolium salt and a base are described. After optimization of the reaction conditions, five- and six-membered cyclic acyloins were obtained in good to excellent yields and competing reactions such as intramolecular aldol reactions were suppressed. The analogous closure of seven-membered rings proved difficult.
