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Inter-and Intramolecular (4+3) Cycloadditions With Epoxy Allylsilanes as Dienophiles
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DOI:10.1002/asia.70708.png)
Abstract
En 中文
Methylenated cycloheptanoids are synthesized by formal (4+3) cycloadditions of dienes with epoxy allylsilanes as dienophiles in the presence of catalytic amounts of TESOTf. Intermolecular and intramolecular (4+3) cycloadditions with dienes including furans, cyclopentadiene, pyrroles, thiophenes, and benzenes proceeded to provide polycyclic adducts in moderate to good yields.
Keywords:
(4+3) cycloaddition
allylsilanes
seven-membered ring
methylenecycloheptane
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