Serendipitous synthesis of 2-amino-2,3-dihydrobenzofuran derivatives starting from Baylis–Hillman adducts
作者:Ka Young Lee、Joobeom Seo、Jae Nyoung Kim
DOI:10.1016/j.tetlet.2006.03.167
日期:2006.6
Serendipitous synthesis of 2-amino-2,3-dihydrobenzofuran derivatives 4a-g was achieved starting from the Baylis-Hillman adducts. In the reaction sequence, intramolecular oxygen atom transfer from nitrogen atom to arene moiety was observed. (c) 2006 Elsevier Ltd. All rights reserved.
Studies on the reduction of the nitro group in 3-aryl-2-methylene-4-nitro-alkanoates afforded by the Baylis–Hillman adducts: synthesis of 4-aryl-3-methylene-2-pyrrolidinones and 3-(1-alkoxycarbonyl-vinyl)-1H-indole-2-carboxylates
作者:Vijay Singh、Sanjeev Kanojiya、Sanjay Batra
DOI:10.1016/j.tet.2006.08.045
日期:2006.10
formation of substituted 2-pyrrolidinones and indoles by the reduction of the secondary nitro group in appropriate 3-aryl-2-methylene-4-nitroalkanoates afforded by Baylis–Hillman chemistry via different reducingagents is described. The 3-aryl-2-methylene-4-nitroalkanoate obtained from SN2 nucleophilic reaction between the acetate of Baylis–Hillman adducts and ethyl nitroacetate upon reduction with indium–HCl