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- W2318171520 abstract "The [5.3.1] propelladiene (1) has been synthesized in six steps from the readily available [4.3.1] propellene (10a). Epoxidation of (10a) gives oxide (11a) which undergoes base-promoted rearrangement to allylic alcohol (12a). Simmons-Smith cyclopropanation of (12a) then gives the tetracyclic alcohol (13a). Mild thermolysis of the derived mesylate (14a) affords the ring-expanded isomer (20) which reacts with 1,8-diazabicyclo [5.4.0]undec-7-ene to give diene (1). A similar sequence of reactions has been used in the preparation of dienol (2) from acetal (10b). Compounds (1) and (2) react with 4-phenyl-4H-1,2,4-triazoline- 3,5-dione to give the Diels-Alder adducts (29a) and (29b) respectively." @default.
- W2318171520 created "2016-06-24" @default.
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- W2318171520 date "1988-01-01" @default.
- W2318171520 modified "2023-10-09" @default.
- W2318171520 title "The Cyclopropane-Mediated Ring-Expansion of [4.3.1]Propellenes. A New Route to [5.3.1]Propelladienes" @default.
- W2318171520 doi "https://doi.org/10.1071/ch9881037" @default.
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