Synthesis of Alkenylgold(I) Complexes Relevant to Catalytic Carboxylative Cyclization of Unsaturated Amines and Alcohols
作者:Shun Hase、Kyohei Yamashita、Yoshihito Kayaki
DOI:10.3390/molecules29061331
日期:——
place in aprotic THF at room temperature under the atmospheric pressure of CO2 in the absence of base additives. The products were characterized by NMR spectroscopy, elemental analysis, and X-ray crystallography. The functionalized alkenyl complexes prepared from the alkynes can be protonated by treatment with an equimolar amount of acetic acid to afford five- or six-membered carboxylation products
不饱和胺和醇化合物的羧化,包括4-苄氨基-1-苯基-1-丁炔(高炔丙胺)、2-丁炔-1-醇(炔丙醇)和2,3-丁二烯-1-醇(丙二烯基甲醇) ),使用羟基金(I)络合物,AuOH(IPr)[IPr = 1,3-双(2,6-二异丙基苯基)-咪唑-2-亚基],与环状氨基甲酸酯或碳酸酯生成相应的烯基金(I)络合物高收益的框架。该反应在室温、CO2 大气压、无碱添加剂的情况下在非质子 THF 中进行。通过NMR光谱、元素分析和X射线晶体学对产物进行了表征。由炔烃制备的官能化烯基络合物可以通过用等摩尔量的乙酸处理来质子化以提供五元或六元羧化产物,而衍生自丙二烯基甲醇的相关烯基络合物通过开环分解以回收起始丙二烯脱羧。