US 4,071,562 AGranted

4,5-Dialkoxy-6 or 7-indanaldehydes

AssigneeMarion Laboratories, Inc.

InventorsIan William Mathison, William Ebenezer Solomons, Raymond Henry Jones

Life of this patent

Estimating the term…

Provided are compounds of the formula ##STR1## wherein R and R.sub.1 are the same or different lower alkyl groups and R.sub.3 is hydrogen or CHO--.

Dependent claims

A compound of the formula ##STR9## wherein R and R.sub.1 are the same or different lower alkyl groups, and R.sub.4 is CHO--.

Dependencies are inferred from the claim text.

C07D 221/16
Ring systems of three rings: containing carbocyclic rings other than six-membered
C07C 45/513
Involving transformation of singly bound oxygen functional groups to >C = O groups: the singly bound functional group being an etherified hydroxyl…
C07C 45/81
Separation; Purification; Stabilisation; Use of additives: by change in the physical state, e.g. crystallisation
C07C 45/82
By change in the physical state, e.g. crystallisation: by distillation

From the US filing history. Foreign family members aren’t listed.

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