2-Phenylpyrroles as conformationally restricted benzamide analogs. A new class of potential antipsychotics. 2
作者:Ineke Van Wijngaarden、Chris G. Kruse、Jan A. M. Van der Heyden、Martin T. M. Tulp
DOI:10.1021/jm00118a011
日期:1988.10
A series of 2-phenylpyrrole Mannichbases was synthesized and screened in pharmacological models for antipsychotic activity and extrapyramidal effects. Structure modifications of 5-(4-fluorophenyl)-2-[[4-(2-methoxyphenyl)-1-piperazinyl]methyl]pyrrole (1), the prototype of a new class of sodium-independent atypical dopamine D-2 antagonists, resulted in 2-[[4-(7-benzofuranyl)-1-piperazinyl]methyl]-5
Transition-metal-free direct trifluoromethylthiolation of electron-rich aromatics using CF3SO2Na in the presence of PhPCl2
作者:Xia Zhao、Xiancai Zheng、Miaomiao Tian、Jianqiao Sheng、Yifan Tong、Kui Lu
DOI:10.1016/j.tet.2017.11.019
日期:2017.12
A novel transition metal-free route for the direct trifluoromethylthiolation of electron-rich aromatics using CF3SO2Na in the presence of PhPCl2 was developed. More specifically, PhPCl2 was used as both a reducing and a chlorinating reagent for the first time in this CF3SO2Na-based trifluoromethylthiolation reaction. The absence of transition metals and the use of cheap and readily available reagents
开发了一种新颖的无过渡金属的路线,该路线用于在PhPCl 2存在下使用CF 3 SO 2 Na直接进行富电子芳族化合物的三氟甲基硫醇化。更具体地,在基于CF 3 SO 2 Na的三氟甲基硫醇化反应中,PhPCl 2首次被用作还原剂和氯化剂。过渡金属的缺乏以及廉价和容易获得的试剂的使用使该方法成为富电子芳族化合物三氟甲基硫醇化的替代和实用策略。
Direct Aromatic CH Trifluoromethylation via an Electron-Donor-Acceptor Complex
A novel electron‐donor–acceptor (EDA) complex‐mediated direct CH trifluoromethylation of arenes with Umemoto’s reagent has been developed. This transformation has been enabled by an unprecedented EDA complex formed by Umemoto’s reagent and an amine, which was supported by experiments and theoretical calculations. The radical‐based methodology presented here allows to access highly‐functionalized trifluoromethyl
Synthesis of Dihydropyrrolizine and Tetrahydroindolizine Scaffolds from Pyrroles by Titanocene(III) Catalysis
作者:Sven Hildebrandt、Andreas Gansäuer
DOI:10.1002/anie.201603985
日期:2016.8.8
A synthetic approach to dihydropyrrolizine and tetrahydroindolizine scaffolds from pyrroles has been developed. The key step, a titanocene(III)‐catalyzed radical arylation that proceeds by C−H functionalization is atom‐economical and tolerates a large variety of functional groups. The reaction is therefore attractive for the swift assembly of functional and structural diversity.
We herein report an efficient and systematic synthesis of 1-pyrrolines from cyclobutyl azides under thermal and neutral conditions. The reaction proceeded without any additional reagents, and nitrogen was generated as the sole by-product. Furthermore, the generated 1-pyrrolines could be continuously transformed into pyrroles, N-Boc-amines, and oxaziridines in an one-pot manner.