Synthesis of fused tetracyclic spiroindoles via palladium-catalysed cascade cyclisation
Synthesis of fused tetracyclic spiroindoles via palladium-catalysed cascade cyclisation
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DOI:
10.1039/c3cc46511j
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发表时间:
2014-01-01
影响因子:
4.9
通讯作者:
Ohno, Hiroaki
中科院分区:
文献类型:
--
作者:
Iwata, Akira;Inuki, Shinsuke;Ohno, Hiroaki
Efficient palladium-catalysed cascade cyclisation to form spiroindoles is developed. Treatment of indoles bearing a propargyl chloride side chain at the 3-position with various external nucleophiles in the presence of a catalytic amount of Pd-2(dba)(3)center dot CHCl3/dppb and Cs2CO3 in THF gives fused tetracyclic spiroindoles in moderate to good yields.