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US 4,042,635 AGranted
Spiro compounds
AssigneeCiba-Geigy Corporation
InventorsPaul Rys, Rolf Vogelsanger
Life of this patent
Estimating the term…
Abstract
Compounds which contain a group bonded directly to an aromatic nucleus of the formula --(CH.sub.2 --).sub.n --X (1) in which n is a positive integer having a value of at least 2 and X represents a removable substituent.
Claims2
A compound which contains a group of the formula,
- --(CH.sub.2).sub.n --X (1)
- which is bonded directly to an aromatic nucleus of an at least bicyclic, aromatic six-membered naphthalene ring system, wherein n is a positive integer havng a value of 2 and X represents a halogen atom.
Dependencies are inferred from the claim text.