Intramolecular reactions of Fischer Carbene complexes with alkynes and a mechanistic study of the interception of reactive intermediates with added acetylenes
作者:Benjamin A. Anderson、Jianming Bao、Timothy A. Brandvold、Cynthia A. Challener、William D. Wulff、Yao Chang Xu、Arnold L. Rheingold
DOI:10.1021/ja00076a028
日期:1993.11
and the internal alkyne in the carbene complex. All four of the possible phenol products of this reaction were independently synthesized, and the product distribution among the four isomers and the cyclopentenedione was investigated as a function of solvent, concentration, and the nature of the metal. The results of these experiments suggest that the phenol 13 arises from a vinylcarbene complexed intermediateand
第 6 族金属的 1-(4-己炔基)甲氧基亚甲基五羰基配合物 11 与炔烃反应生成苯酚和环戊烯二酮产物,两者都是与一分子外炔烃和卡宾配合物中的内炔烃环化的结果. 该反应的所有四种可能的苯酚产物都是独立合成的,并且研究了四种异构体和环戊烯二酮之间的产物分布作为溶剂、浓度和金属性质的函数。这些实验的结果表明苯酚 13 来自乙烯基卡宾复合中间体,苯酚 16 和环戊烯二酮 12 来自乙烯基乙烯酮复合中间体