Metal-Free Direct C-H β-Carbonyl Alkylation of Heteroarenes with Cyclopropanols Mediated by K<sub>2</sub>
S<sub>2</sub>
O<sub>8</sub>
作者:Qiang Liu、Qiang Wang、Guanqun Xie、Zeyang Fang、Shujiang Ding、Xiaoxia Wang
DOI:10.1002/ejoc.202000289
日期:2020.5.10
direct C–H β‐carbonyl alkylation of heteroarenes has been achieved through K2S2O8‐mediated ring‐opening of cyclopropanols. A wide scope of substrates, such as various substituted quinolines and isoquinolines, pyridines, pyridazine, benzo[d]thiazole, and phenanthroline, underwent the β‐carbonyl alkylation efficiently and afforded the β‐heteroarylated ketones in moderate to excellent yields.
Iron catalyzed tandem ring opening/1,6-conjugate addition of cyclopropanols with <i>p</i>-quinone methides: new access to γ,γ-diaryl ketones
作者:Sachin R. Shirsath、Sagar M. Chandgude、M. Muthukrishnan
DOI:10.1039/d1cc05997a
日期:——
An iron(III) catalyzed tandem ring opening/1,6-conjugate addition of cyclopropanols to p-quinone methides leading to γ,γ-diaryl ketones has been described. This catalytic protocol provides a novel and efficient method to access γ,γ-diaryl ketone derivatives in good to excellent yields with high functional group tolerance. Importantly, γ,γ-diaryl ketone can be further functionalized to give a versatile
A new method for Co‐catalyzedC−H/N−H functionalization and [4+1] annulation of N‐(quinolin‐8‐yl)benzamide with cyclopropanols was developed. This protocol tolerates a variety of functional groups, thereby providing an efficient method for the fabrication of isoindolin‐1‐one.
[EN] 1,3,4-OXADIAZOLE PYRIMIDINES AND 1,3,4-OXADIAZOLE PYRIDINES AS FUNGICIDES<br/>[FR] 1,3,4-OXADIAZOLE PYRIMIDINES ET 1,3,4-OXADIAZOLE PYRIDINES UTILISÉES COMME FONGICIDES
申请人:BAYER AG
公开号:WO2021255089A1
公开(公告)日:2021-12-23
The present invention relates to 1,3,4-oxadiazol-2-ylpyrimidine and 1,3,4-oxadiazol-2-ylpyridine compounds, processes and intermediates for their preparation as well as the uses thereof for controlling harmful microorganisms, in particular phytopathogenic fungi, in crop protection.
Photocatalyzed Cascade Reactions of Cyclopropanols and
<i>α</i>
‐Trifluoromethyl‐Substituted Olefins for the Synthesis of Fused
<i>gem</i>
‐Difluorooxetanes
A combination of photoredox catalysis and energy transfer catalysis/direct photo-excitation enables cascade reactions of cyclopropanols and α-CF3-olefins, in which two rings and three bonds are constructed in one reaction, affording fused gem-difluorooxetanes. The reaction shows broad substrate scope, complete cis-selectivity, and downstream transformations of the products demonstrated the synthetic