Chinazolone aus 2,5‐Diamino‐Terephthalsäure

New synthetic route to pyrimido[4,5-g]quinazoline-4,9-diones

“…[17][18][19][20][21] For 2,7-di(hetero)aryl substituted pyrimido[4,5-g]quinazoline-4,9-diones, only the synthesis of 2,7-diphenylpyrimido[4,5-g]quinazoline-4,9-dione was reported. 22 They used 2,5-diaminoterephthalic acid as a starting material to prepare 2,7-diphenylpyrimido[4,5-g]-quinazoline-4,9-dione with several routes. Unfortunately, synthetic details were limited.…”

Pyrimido[4,5-g]quinazoline-4,9-dione as a new building block for constructing polymer semiconductors with high sensitivity to acids and hole transport performance in organic thin film transistors

“…[23][24][25] Although PQ derivatives were reported as early as in the 1900s by Bogert et al, 26,27 synthetic approaches to PQ compounds have not been well established yet. [28][29][30][31] We recently reported a facile method in synthesizing PQ-based compounds. 32 In this work, we used the bromo-functionalized compounds (PQ2T-R-Br) in Scheme 1 as monomers to successfully synthesize two PQ-based p-conjugated polymers.…”