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
A catalytic system consisting of sodium tungstate and methyltrioctylammonium hydrogensulfate effects oxidation of simple secondary alcohols to ketones using 3—30% H2O2 without any organic solvents. The oxidation can be conducted under entirely halide-free, mildly acidic conditions. A combination of tungstic acid and an appropriate quaternary ammoniumsalt also effects the alcohol dehydrogenation. The
Dehydrogenation of alcohols with allyl carbonates catalyzed by palladium or ruthenium complexes
作者:Ichiro Minami、Jiro Tsuji
DOI:10.1016/s0040-4020(01)81672-0
日期:——
alkyl allyl carbonates with a phosphine-free palladium catalyst in acetonltrile affords ketones or aldehydes in high yields. This new method of oxidation of alcohols via allyl carbonates can be applied to various alcohols except simple primary alcohols. The reaction proceeds under neutral conditions and hence various acid- or base-sensitive functional groups are not affected during the reaction. Ruthenium
This application relates to derivatives of hydrocarbon terpenes (e.g., myrcene or farnesene), to methods of making the derivatives, and to the use of the derivatives as surfactants.
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