Divergent Syntheses of Spiroindanones and 2-Substituted 1-Indanones by Ruthenium-Catalyzed Tandem Coupling and Cyclization of Aromatic Acids with α,β-Unsaturated Ketones
作者:Jia-Ni Wang、Si-Qi Chen、Zhong-Wen Liu、Xian-Ying Shi
DOI:10.1021/acs.joc.8b02820
日期:2019.2.1
The one-step strategy for the facile syntheses of structurally diverse 1-indanones in moderate to good isolated yields was developed via a ruthenium-catalyzed tandem coupling and cyclization of simple aromatic acids with α,β-unsaturatedketones. The tandem cyclization involves one-pot sequential reactions of C–H activation, conjugate addition, Dieckmann condensation, Michael addition, intramolecular
Copper-Promoted Intramolecular Oxidative Dehydrogenation for Synthesizing Dihydroisocoumarins and Isocoumarins
作者:Qiang Zhang、Lin-Yan Zhang、Xian-Ying Shi
DOI:10.3390/molecules28176319
日期:——
biological activities, such as anti-bacterial, anti-allergy, anti-fungal, anti-tumor, and anti-HIV properties. Herein, we demonstrated divergent syntheses of isocoumarins and 3,4-dihydroisocoumarins by intramolecular dehydrogenative cyclization of 2-(3-oxobutyl) benzoic acids. This transformation undergoes Csp3–H bonds and O–H bonds coupling in air using copper salt. The reactions may undergo free radical process
Carboxyl-Directed Conjugate Addition of C−H Bonds to <i>α</i>
,<i>β</i>
-Unsaturated Ketones in Air and Water
作者:Wen-Jing Han、Fan Pu、Chao-Jun Li、Zhong-Wen Liu、Juan Fan、Xian-Ying Shi
DOI:10.1002/adsc.201701468
日期:2018.4.3
removable carboxyl group was developed as an effective protocol to synthesize ortho‐alkylated benzoic acids in a greener manner. Without any additives, satisfactory to excellent yields of the targeted products were achieved in neat water, and the process characterizes in mild reaction conditions (in air and water), simple operations, and broadsubstratescope. Noteworthy features of this method include