Ionic Liquid : An Efficient and Recyclable Catalyst for the Synthesis of 1-Amidoalkyl-2-naphthols and 1-Carbamatoalkyl-2-naphthols Under Solvent-Free Conditions
作者:Krishna M. Deshmukh、Ziyauddin S. Qureshi、Yogesh P. Patil、Bhalchandra M. Bhanage
DOI:10.1080/00397911.2010.522293
日期:2012.1.1
Abstract A simple and efficient protocol for the one-pot synthesis of 1-amidoalkyl-2-naphthols and novel 1-carbamatoalkyl-2-naphthols has been described undersolvent-freeconditions, using N-methyl-2-pyrrolidone hydrogen sulfate as a reusable Brønsted acidic ionic liquid. This methodology has several advantages such as use of a halogen-free ionic liquid , excellent yields, short reaction time, easy
Solvent-free, highly efficient one-pot multi-component synthesis of 1-amido- and 1-carbamato-alkyl naphthols/phenols catalyzed by ethylammonium nitrate as reusable ionic liquid under neat reaction condition at ambient temperature
作者:Shafeek A.R. Mulla、Tarek A. Salama、Mohsinkhan Y. Pathan、Suleman M. Inamdar、Santosh S. Chavan
DOI:10.1016/j.tetlet.2012.12.004
日期:2013.2
developed for the efficient synthesis of 1-amido- and 1-carbamato-alkyl naphthols/phenols in excellent yields via one-pot three-component condensation of various aldehydes, amides/carbamates/urea, and naphthols/phenols using ethylammonium nitrate (EAN) as a reusable ionic liquid catalyst under neat reaction condition at ambient temperature.