公开(公告)号：US3441563A

公开(公告)日：1969-04-29

申请号：US3441563D

申请日：1965-01-05

Applicant: BAYER AG

Inventor： WEISSEL OSKAR ,  RAUE RODERICH ,  PSAAR HUBERTUS

IPC: C09B23/04 ,  G03C1/83 ,  C07D49/14

CPC classification number: C09B23/04 ,  G03C1/832

公开(公告)号：US3637748A

公开(公告)日：1972-01-25

申请号：US3637748D

申请日：1968-04-05

Applicant: BAYER AG

Inventor： PSAAR HUBERTUS ,  RAUE RODERICH

IPC: C07D209/14 ,  C09B11/26 ,  C07D27/56

CPC classification number: C09B11/26 ,  C07D209/14

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.