Selective syntheses of diversely substituted 2-hydroxy-4′-hydroxybenzophenones through [4 + 2] or [3 + 3] annulation of penta-3,4-dien-2-ones with 3-formylchromones
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DOI: 10.1039/c7qo00366h
Abstract: A selective synthesis of 2-hydroxy-4′-hydroxybenzophenones or their 3′-acylated counterparts through the cascade reactions of 3-formylchromones with diversely substituted penta-3,4-dien-2-ones is presented. Mechanistically, the formation of the title compounds involves either an unprecedented [4 + 2]… read more here.
Keywords: annulation; hydroxy hydroxybenzophenones; dien ones; selective syntheses ... See more keywords
Novel Asymmetric Thiazolyl-Substituted Penta-1,4-Dien-3-Ones and 3,5-Diaryl-2-Pyrazolines
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DOI: 10.1080/10406638.2020.1858882
Abstract: Various diaryl/hetaryl representatives of penta-1,4-dien-3-one series attract the attention of synthetic chemists during several decades owing to the possibility of their consequent chemical modifi... read more here.
Keywords: substituted penta; asymmetric thiazolyl; novel asymmetric; dien ones ... See more keywords