Patent ID: 8916071
Filing Date: 2014-12-23
Classification: C07C,C07D,C09K

Abstract:
1. A chromene compound having a basic skeleton represented by the following formula (1): wherein (i) Each of R in the above formula, ring X represented by the following formula is an aromatic hydrocarbon ring or aromatic heterocyclic ring, R 3 and R 4 are each independently an alkyl group, haloalkyl group, cycloalkyl group, alkoxy group, amino group, heterocyclic group containing a ring member nitrogen atom and bonded to the ring X bonded thereto via the nitrogen atom, halogen atom, aryloxy group or aryl group, “a” is an integer of 0 to 4, and when “a” is 2 to 4, a plurality of R 4 's may be the same or different; (ii) R (iii) R