The One-Step Synthesis of 3,4-Dihydropyrano[F]Chromene Derivatives in Under Grinding as an Environmentally Friendly Alternative
作者:Abolghasem Shameli Akandi、Ebrahim Balali、Talieh Mosavat、Mohammad Mehdi Ghanbari、Ali Eazabadi
DOI:10.13005/ojc/300225
日期:2014.7.1
1,4-diazabicyclo[2.2.2]octane (DABCO) was used as a catalyst for one-pot, three-component condensation reactions consisting of aromatic aldehydes, malononitrile and β-Naphtol under grinding at room temperature, to afford the corresponding dihydropyrano[c]chromenes in high yields. This method has the advantages of a simple operation, mild reaction conditions, high yields, by using a less toxic and low cost chemical as a catalyst.
DABCO‐Catalyzed Efficient Synthesis of Naphthopyran Derivatives via One‐Pot Three‐Component Condensation Reaction at Room Temperature
作者:Saeed Balalaie、Sorour Ramezanpour、Morteza Bararjanian、Jürgen H. Gross
DOI:10.1080/00397910701862865
日期:2008.3.1
(DABCO) has been used as a mild and efficient catalyst for synthesis of 2‐amino‐3‐cyano naphthopyran derivatives via a one‐potthree‐componentreaction of aromatic aldehydes, naphthols, and malononitrile at room temperature. The short reaction times, easy workup, good to excellent yields, and mild reaction conditions make this domino Knoevenagel–Michael reaction both practical and attractive.