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US 4,067,885 AGranted
Intermediate in the preparation of 6,6-alkylenedioxyalkan-2-ones
AssigneeHoffmann-La Roche Inc.
InventorsUrs Oskar Hengartner, Pius Anton Wehrli
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Abstract
An improved process for the preparation of 6,6-alkylenedioxyalkan-2-ones starting from alkyl vinyl ketones and alkyl acetoacetates is disclosed. The 6,6-alkylenedioxyalkan-2-ones are useful as intermediates in the total synthesis of therapeutically valuable steroids.
Claims1
A compound of the formula ##STR5## wherein R, R.sub.1, and R.sub.2 are hydrogen or lower alkyl, R.sub.3 is lower alkyl and n is 1.
Dependencies are inferred from the claim text.