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- W2950559569 abstract "The cycloaddition of substituted furans to the diterpenoid aryne (39), generated by in situ diazotization of the anthranilic acid (1) followed by cleavage of the annulated 1,4- epoxydecahydrochrysenes, provides a convenient method for the preparation in high yield of the previously unknown 1-substituted octahydrochrysen-4-ols. Use of 1,3-dipoles under the same procedure, or under a modified procedure involving pre-isolation of the diazonium tetrafluoroborate salt (9), gave novel annulated heterocyclic products directly. Attempted [2+2] cycloadditions of electron-rich alkenes to the diterpenoid aryne (39) were largely unsuccessful but reaction with 1,1-dimethoxyethene by using in situ diazotization gave a product derived from an initial [2+2] cycloaddition." @default.
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- W2950559569 date "1994-01-01" @default.
- W2950559569 modified "2023-09-24" @default.
- W2950559569 title "Annulations of Podocarpic Acid Derivatives via an Aryne Intermediate" @default.
- W2950559569 doi "https://doi.org/10.1071/ch9941815" @default.
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