A New One??Pot Synthetic Approach to the Highly Functionalized (Z)??2??(Buta??1, 3??dienyl) phenols and 2??Methyl??2H??chromenes: Use of Amine, Ruthenium and Base …

…, VV Narayana, K Ramakumar

文献索引：Ramachary, Dhevalapally B.; Narayana, Vidadala V.; Ramakumar, Kinthada European Journal of Organic Chemistry, 2008 , # 23 p. 3907 - 3911

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被引用次数: 12

摘要

Abstract A practical and simple one-pot multi-catalysis process for the synthesis of highly substituted benzo [b] oxepines 5,(Z)-2-(buta-1, 3-dienyl) phenols 6 and 2-methyl-2H- chromenes 7 from simple starting materials was achieved for the first time through ring- closing metathesis/base-induced ring opening/[1, 7]-sigmatropic hydrogen shift reactions. The synthesis of privileged (Z)-2-(buta-1, 3-dienyl) phenols 6 via base-induced ring ...