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A convergent strategy is reported for the construction of nitrogen-containing heterocycles from common substrates: 1,4-diketones and primary amines. Indeed, by just varying substrates, substituents or heating mode it is possible to selectively synthesize indole, indolone (1,5,6,7-tetradihydroindol-4-one) or cinnoline (5,6,7,8-tetrahydrocinnoline) derivatives in moderate to excellent yields.doi:10.3762/bxiv.2020.56.v1 fatcat:b6kz4bgzzrdl7hxzoitmv6cu4i