Recyclable, Graphite-Catalyzed, Four-Component Synthesis of Functionalized Pyrroles

Synthesis of 2-aryl substituted 2,3-dihydroquinazoline-4(1H)-ones under solvent free conditions using ionic liquid as a mild and efficient catalyst

“…In continuation numbers of our efforts in the development of novel, environ-friendly and synthetic methodologies [26][27][28][29][30][31][32][33], we report here a mild and efficient one-pot protocol for the synthesis of 2,3-dihydroquinazolin-4(1H)-one derivatives by two component reactions catalysed by ionic liquid under mild condition (Scheme 1). The reaction when tried with different aldehydes, diverse functional groups played significant roles in achieving the product yield.…”

Application of β‐Nitrostyrene in Multicomponent Reactions for the Synthesis of Pyrrole Derivatives

“…Next, the amount of nitromethane in reaction increased to (1.5 ml) and reaction was examined by 5, 10, 15, 20, 30 and 40 mol % of catalyst at 90–100 °C that the best yields (60–88 %) was obtained by (20 mol %) of catalyst after (4–6) h (Scheme ). The reported proposed mechanism by the authors, is illustrated in (Scheme ) …”

The graphite-catalyzed ipso-functionalization of arylboronic acids in an aqueous medium: metal-free access to phenols, anilines, nitroarenes, and haloarenes

“… 12 Among them, the use of graphite as an environmentally benign catalyst in organic synthesis has taken on vast significance. 13 …”