TFA‐Catalyzed [3+2] Spiroannulation of Cyclobutanols: A Route to Spiro[cyclobuta[
<i>a</i>
]indene‐7,1′‐cyclobutane] Skeletons
作者:Zhenyu An、Yafeng Liu、Yanwei Sun、Rulong Yan
DOI:10.1002/asia.202001048
日期:2020.11.16
A straightforward method for the synthesis of spiro[cyclobuta[a]indene‐7,1′‐cyclobutane] derivatives from cyclobutanols has been developed via one‐pot [3+2] spiroannulation. A series of new spiro[cyclobuta[a]indene‐7,1′‐cyclobutane] derivatives are facilely synthesized in good yields under mild reaction conditions.
一种通过单锅[3 + 2]螺环合成法开发了一种从环丁醇合成螺[cyclobuta [ a ] indene-7,1'-cyclobutane]衍生物的简单方法。在温和的反应条件下,以高收率容易地合成了一系列新的螺[cyclobuta [ a ] indene-7,1'-cyclobutane]衍生物。