Acyclic nitronate olefin cycloaddition (ANOC): regio- and stereospecific synthesis of isoxazolines
作者:Liang Ma、Luyao Kou、Feng Jin、Xionglve Cheng、Suyan Tao、Gangzhong Jiang、Xiaoguang Bao、Xiaobing Wan
DOI:10.1039/d0sc05607c
日期:——
We report the first demonstrations of intra- and intermolecular acyclic nitronate olefin cycloaddition (ANOC) reactions that enable the highly efficient syntheses of isoxazolines bearing various functional groups. This general approach to accessing γ-lactone fused isoxazolines was hitherto unprecedented. The room temperature transformations reported herein exhibit wide substrate scopes, as evidenced
Divergent Functionalization of Indoles with Acryloyl Silanes via Rhodium-Catalyzed C–H Activation
作者:Ping Lu、Chao Feng、Teck-Peng Loh
DOI:10.1021/acs.orglett.5b01258
日期:2015.7.2
by rhodium-catalyzed C–H functionalization of indoles with acryloyl silanes was developed, providing a convenient and highly effective method for the synthesis of functionalized acylsilane derivatives. By tuning the reaction condition, this C–H-activation-initiated reaction proceeds divergently with acryloyl silianes to selectively afford alkylation or alkenylation products via hydroarylation or oxidative
Chemistry of silyl thioketones part 9. A new selective synthesis of 1-silyl-1-enethiols and of 2-silyl-thiacycloalk-2-enes of common to large ring size
作者:Bianca F. Bonini、Mauro Comes-Franchini、Mariafrancesca Fochi、Germana Mazzanti、Alfredo Ricci
DOI:10.1016/0040-4020(96)00148-2
日期:1996.3
ω-Haloacylsilanes 1 were selectively transformed via thioacylsilanes into Z-silyl-enethiols 4 with solid sodium hydrogen carbonate or into 2-silylthiacycloalk-2-enes 5 of common to largeringsize with solid sodium hydroxide. Compounds 5 underwent protiodesilylation.
Ru-Catalyzed Synthesis of α,β-Unsaturated Acylsilanes and Its Applications in C–N Bond Formation
作者:Yongli Li、Hao Zhang、Jiawei Li、Dalong Shen、Zhenxing Liu
DOI:10.1021/acs.orglett.2c04024
日期:2022.12.16
α,β-Unsaturated acylsilanes have multifunctional sites and can be used in many transformations. However, the existing methods for preparing them generally suffer from problems, such as low atom and step economy, a narrow substrate scope, etc. Herein, an efficient and general method for accessing α,β-unsaturated acylsilanes through Ru-catalyzed cross-metathesis has been developed. This method is applied
A controllable Rh-catalyzed protocol to access alkylation and akenylation-annulation off N-tosyl acrylamide with, acryloyl silane is reported. In contrast to the directing group or catalyst-dependent divergent sp(2) C-H alkylation/alkenylation the instrinsic property of acryloylsilane allows the switchable reaction manifold, thereby affording either alkylation or alkylation Products with slight modification of the reaction conditions.