Selective synthesis of trisubstituted pyrroles through the reactions of alkynyl Fischer carbene complexes with oxazolones
作者:Julio López、Iván Velazco-Cabral、Eloy Rodríguez-deLeón、Clarisa Villegas Gómez、Francisco Delgado、Joaquín Tamariz、Ana Arrieta、Fernando P. Cossío、Miguel A. Vázquez
DOI:10.1039/c9ob02411e
日期:——
An efficient and simple synthesis of novel trisubstituted 1H-pyrroles 4a-qvia 1,3-dipolar cycloaddition of Δ3-trifluoromethyloxazolones 2a-d with both chromium and tungsten alkynyl Fischercarbenecomplexes (1a-h) is described. An unexpected and unreported -CF3 group elimination process was observed in the pyrrole structure. Our experimental and theoretical data suggested that the metal fragment may
4,5-Diaryl-.alpha.-(polyfluoroalkyl)-1H-pyrrole-2-methanamines such as 4,5-bis(4-fluorophenyl)-.alpha..alpha.-bis-(trifluoromethyl)-1H-pyrrole-2- methanamine, useful in treatment of inflammation.
4,5-Diaryl-.alpha.,.alpha.-bis(polyfluoromethyl)-1H-pyrrole-2-methanethiols , such as 4,5-bis(4-fluorophenyl)-.alpha., .alpha.-bis(trifluoromethyl)-1H-pyrrole-2-methanethiol, useful in treatment of inflammation.
Antiinflammatory 4,5-diaryl-2-(substituted-thio)pyrroles and their
申请人:E. I. Du Pont de Nemours and Company
公开号:US04267184A1
公开(公告)日:1981-05-12
Antiinflammatory 4,5-diaryl-2-(substituted-thio)pyrroles and their corresponding sulfoxides and sulfones, useful for treating arthritis and related diseases.
抗炎性4,5-二芳基-2-(取代硫)吡咯及其对应的亚砜和磺酰化物,可用于治疗关节炎和相关疾病。
Synthesis of Substituted Pyrroles from N-Vinylic Phosphazenes Derived from β-Amino Acids and α-Bromo Ketones
Synthesis of di-, tri- and tetrasubstituted pyrroles by reaction of N-vinylic phosphazenes derived from β-amino acids with α-bromo ketones is described.