The cata-condensed system if azulene fused with 1,6-methano [ 10 ]annulenes was synthesized. The 1H NMR spectra revealed the existence of diastropicity as 18-pi electron periphery.
如果将azulene与1,6-methano [10]环戊烯融合,则会生成催化缩合体系。的1 1 H NMR光谱显示diastropicity的存在作为18-π电子周边。