Iron (III)‐Promoted Synthesis of Substituted 4
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‐Chalcogenochromenes and Chemoselective Functionalization
作者:Isadora M. de Oliveira、C. Henrique A. Esteves、Mariana P. Darbem、Daniel C. Pimenta、Julio Zukerman‐Schpector、Antonio G. Ferreira、Hélio A. Stefani、Flavia Manarin
DOI:10.1002/adsc.201900142
日期:2019.7.2
The iron(III)‐promoted synthesis of densely‐substituted 4H‐chalcogenchromene from organochalcogen propargylamines in the presence of diaryl dichalcogenides is reported. Subsequent C2‐functionalization with electrophiles and potassium trifluoroborate salts via Suzuki‐Miyaura coupling reaction are also presented. A plausible mechanism based on HRMS experiments is proposed and discussed.
据报道,在二芳基二卤化物存在的情况下,由铁(III)促进了有机硫属炔丙基胺合成致密取代的4 H-硫属元素chrome烯。随后介绍了通过Suzuki-Miyaura偶联反应用亲电试剂和三氟硼酸钾盐进行的C2功能化。提出并讨论了一种基于HRMS实验的合理机制。