ChemInform Abstract: Synthesis of Soluble Quinacridones.

Abstract

Synthesis of Soluble Quinacridones.-In contrast to unsubstituted quinacridone, the derivatives (IV) and ( VI) are easily soluble in organic solvents. This remarkable solubility implies that the intermolecular hydrogen bonds of quinacridone are weakened by steric hindrance of the alkylthio groups at the 4 and 11 positions in (IV); in (VI) they are broken by N-alkylation. -(KITAHARA, K.; YANAGIMOTO, H.; NAKAJIMA, N.; NISHI, H.; J.