3-carbonyl-3H-indole: Direct observation and tetramerization to a tetrabenzoporphyrin analogue
作者:Greg GuangHua Qiao、Curt Wentrup
DOI:10.1016/0040-4039(95)00640-x
日期:1995.5
Heterocyclic ketenes with alpha-nitrogen atoms such as P-carbonyl-PH-indole (6) dimerize to a pyrazinedione type molecule (7). However, the beta-nitrogen analogue, viz. 3-carbonyl-3H-indole (5) oligomerizes to tetramer 4. The direct observation of ketene 5 and the characterization of tetramer 4 are described.