An Efficient Synthetic Pathway from Cyclohepta-1,3,5-triene to 2,3-Disubstituted 1,2,3,8-Tetrahydroazulen-1-ones
作者:Takanori Kajioka、Mitsunori Oda、Shin'ichiro Yamada、Yoshio Kawamori、Ryuta Miyatake、Shigeyasu Kuroda
DOI:10.1055/s-1999-3678
日期:——
The Nazarov cyclization of substituted ethyl 3-(cyclohepta-1,3,5-trien-1-yl)-2-methylen-3-oxopropionates, prepared from cyclohepta-1,3,5-triene in three steps, gave solely 2,3-disubstituted 1,2,3,8-tetrahydroazulen-1-ones without any detectable formation of its double bond regioisomer.
Nazarov环化反应由环庚-1,3,5-三烯经三步反应制备,仅生成2,3-二取代的1,2,3,8-四氢氮杂萘-1-酮,而未检测到其双键区域异构体的形成。