Reactivity of spiroanthraceneoxazolidines with cyclopropanes: An approach to the oxindole alkaloid scaffold
作者:Evgeny M. Buev、Vladimir S. Moshkin、Vyacheslav Y. Sosnovskikh
DOI:10.1016/j.tetlet.2018.08.001
日期:2018.9
The reaction of N-methylspiro[anthracene-oxazolidine] with spiro[cyclopropane-3,3′-indolin]-2-ones in the presence of MgI2 formed the corresponding spiro[pyrrolidine-3,3′-indolin]-2-ones in 42–65% yields. The use of N-benzylspiro[anthracene-oxazolidine] in this reaction led to the formation of a mixture of the corresponding N-methyl- and N-benzylpyrrolidines.
的反应Ñ -methylspiro [蒽恶唑烷]与螺[环丙烷-3,3'-二氢吲哚] -2酮在MGI存在2形成的相应螺[吡咯烷-3,3'-二氢吲哚] -2-产量为42–65%。在该反应中使用N-苄基螺并[蒽-恶唑烷]导致形成相应的N-甲基-和N-苄基吡咯烷的混合物。