Green Method To Preparing Oxindole-Fused Spirotetrahydrofuran
Scaffolds through Methanesulfonic Acid-Catalyzed Cyclization Reactions
of 3‑Allyl-3-hydroxy-2-oxindole in Water
Posted on 2017-10-20 - 15:53
Water is an ideal solvent for chemical transformations in environmentally
friendly and sustainable processes. An operationally simple, metal-free,
and green approach to the synthesis of oxindole-fused spirotetrahydrofurans
from 3-allyl-3-hydroxy-2-oxindoles in water is described. This method
requires only cheap methanesulfonic acid as a catalyst and eliminates
the need of complicated reagents. This atom- and step-economical transformation
is highly efficient, which provides a new approach for the construction
of oxindole-fused spirotetrahydrofuran molecules with potential pharmaceutical
interest.
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Zhang, Jie-Huan; Wang, Ru-Bing; Li, De-Feng; Zhao, Li-Ming (2017). Green Method To Preparing Oxindole-Fused Spirotetrahydrofuran
Scaffolds through Methanesulfonic Acid-Catalyzed Cyclization Reactions
of 3‑Allyl-3-hydroxy-2-oxindole in Water. ACS Publications. Collection. https://doi.org/10.1021/acsomega.7b01279
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AUTHORS (4)
JZ
Jie-Huan Zhang
RW
Ru-Bing Wang
DL
De-Feng Li
LZ
Li-Ming Zhao
KEYWORDS
methanesulfonic acidPreparing Oxindole-Fused Spirotetrahydrofuran Scaffoldschemical transformationsstep-economical transformationoxindole-fused spirotetrahydrofuransAllylmethodapproachoxindole-fused spirotetrahydrofuran moleculesreagentmetal-freeconstructionMethanesulfonic Acid-Catalyzed Cyclization Reactions3- allyl -3-hydroxyWater WaterGreen Methodsynthesiscatalyst