Heteryl-methane compounds
Abstract
Abstract A HETERYL METHANE COMPOUND OF THE FORMULA A>(=(1-R1,4-(D-CH(-B)-),5-R2-4-PYRROLIN-2,3-YLIDENE)=) WHEREIN R1 AND R2 STAND FOR MEMBERS SELECTED FROM THE CLASS CONSISTING OF HYDROGEN, LOWER ALKYL, CYCLOALKYL, ARALKYL AND ARYL, A STANDS FOR THE RESIDUAL PART OF AN AROMATIC RING SYSTEM, B STANDS FOR A CARBOCYCLIC OR HETROCYCLIC RING SYSTEM BEING LINKED WITH THE CH GROUP VIA A CYCLIC CARBON ATOM OF SAID CARBOCYCLIC OR HETEROCYCLIC RING SYSTEM, D STANDS FOR A CARBOCYCLIC OR HETEROCYCLIC RING SYSTEM BEING LINKED WITH THE CH GROUP VIA A CYCLIC CARBON ATOM OF SAID CARBOXYLIC OR HETEROCYCLIC RING SYSTEM, SAID HETERYL METHANE COMPOUND BEING FREE OF SULPHONIC ACID GROUPS AND ARE VALUABLE DYESTUFF INTERMEDIATES.
Inventors
- 👤 Hubertus Psaar
- 👤 Roderich Raue
Bibliographic Details
Claims Analysis
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