Structure-Activity Relationship of Synthetic 2-Phenylnaphthalenes with Hydroxyl Groups that Inhibit Proliferation and Induce Apoptosis of MCF-7 Cancer Cells
Palladium-Catalyzed <i>syn</i>-Stereocontrolled Ring Opening of Oxabicyclic Alkenes with Arylsulfonyl Hydrazides
作者:Donghan Chen、Yongqi Yao、Wen Yang、Qifu Lin、Huanyong Li、Lin Wang、Shuqi Chen、Yun Tan、Dingqiao Yang
DOI:10.1021/acs.joc.9b01957
日期:2019.10.4
A novel palladium-catalyzed ring-opening reaction of oxabicyclic alkenes with arylsulfonylhydrazides was first developed. In this work, we provide an efficient one-pot reaction to afford the corresponding cis-2-aryl-1,2-dihydronaphthalen-1-ols and 2-aryl-naphthalenes in moderate to excellent yields (up to 95%) under an open-air condition. Various types of functional groups attached to the substrates
The thermal cyclization of 3,4-diphenylbuta-1,3-dienyl isocyanates 1, generated in situ from the corresponding azides, was investigated using iodine as a catalyst. Diphenylpyridinones 2, phenylnaphthalenes 3, and indenes 4 were produced viaintramolecularringclosure. The nature of the substituents on the phenyl rings was found to be crucial to the distribution of cyclized products 2–4. The mechanism
Platinum-catalyzed anti-stereocontrolled ring-opening of oxabicyclic alkenes with Grignard reagents
作者:Dingqiao Yang、Ni Liang
DOI:10.1039/c3ob42199f
日期:——
A new platinum-catalyzed anti-stereocontrolled ring-opening of oxabicyclicalkenes with various Grignardreagents was reported, which afforded the corresponding anti-2-substituted-1,2-dihydronaphthalen-1-ol products with moderate to good yields in the presence of a catalytic amount of Pt(PPh3)4 (2.5 mol%) under mild conditions. The effects of catalyst loading, solvent and temperature on the yield were
Cyclization Reaction for the Synthesis of Polysubstituted Naphthalenes in the Presence of Au(I) Precatalysts
作者:Arun R. Jagdale、Jong Hyub Park、So Won Youn
DOI:10.1021/jo201339z
日期:2011.9.2
Au(I)-catalyzed cyclization of alkenyl carbonyl compounds leading to a variety of substituted naphthalenes has been developed. This process exploits a dual function of the Au(I) catalyst: (1) the oxophilic nature of the Au(I) catalyst, counterintuitive to the pi-acidic reactivities generally associated with Au catalysts, and (2) olefin isomerization supported by the outcome of isotope scrambling experiments. It cannot be completely excluded that TfOH is a true operative catalyst in this protocol. In view of the practicality, the unnecessity of isomerically pure starting material in this reaction is particularly attractive and valuable.
Cooke et al., Australian Journal of Chemistry, 1958, vol. 11, p. 230,233