Abstract
| - 2-Alkyl- and 2,4-dialkyl-3-iodo-1-oxocyclohexan-2,4-carbolactones undergo ammonia-promoted fragmentation reactions to provide butenolides, γ-butyrolactone, and/or β,γ-epoxycyclohexanones. Product distribution is governed bythe relative size of the substituents at C-2 and C-4 of thecyclohexanones. Butenolide amide, the major product fromthe fragmentation, is further converted into their respectivepiperidinone and pyrrolidine derivatives.
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