Regioselective synthesis of polysubstituted benzenes from Baylis–Hillman adducts via [4+2] annulation protocol
作者:Mi Jung Lee、Ka Young Lee、Da Yeon Park、Jae Nyoung Kim
DOI:10.1016/j.tet.2006.01.028
日期:2006.3
A new and regioselective [4+2] benzannulation protocol toward polysubstituted benzenes was developed. A nitroalkane derivative, which was prepared fromBaylis–Hillmanadduct, served as the four-carbon unit and a Michael acceptor as a two-carbon unit. Vinyltriphenylphosphonium salt could also be used as a Michael acceptor efficiently.
Regioselective synthesis of pentasubstituted benzene derivatives: TBAF as an effective catalyst for the sequential Michael addition-intramolecular aldolization
作者:Da Yeon Park、Saravanan Gowrisankar、Jae Nyoung Kim
DOI:10.1016/j.tetlet.2006.06.180
日期:2006.9
Polysubstituted benzene derivatives were synthesized starting from the Baylis-Hillman adducts via the sequential introduction of primary nitroalkane at the primary position, Michael addition to beta-branched Michael acceptor, aldol condensation, elimination of nitrous acid, and the final aromatization process. (c) 2006 Elsevier Ltd. All rights reserved.
Regioselective construction of polysubstituted benzene ring from Baylis–Hillman adduct via [4+2] annulation strategy
作者:Mi Jung Lee、Ka Young Lee、Saravanan Gowrisankar、Jae Nyoung Kim
DOI:10.1016/j.tetlet.2005.12.032
日期:2006.2
A new and regioselective [4+2] benzannulation protocol toward polysubstituted benzenes was developed. Nitroalkane derivative, which was prepared from Baylis-Hillman adduct, served as the four-carbon unit and Michael acceptor as a two-carbon unit. (c) 2005 Elsevier Ltd. All rights reserved.
The Baylis–Hillman acetates in organic synthesis: Unprecedented sodium nitrite induced intramolecular Friedel–Crafts cyclization of secondary nitro compounds
作者:Deevi Basavaiah、Daggula Mallikarjuna Reddy
DOI:10.1039/c4ra03573a
日期:——
Unprecedented sodium nitrite mediated intramolecularFriedel–Craftscyclization of alkyl (E)-2-arylidene-4-nitroalkanoates and (E)-3-arylidene-5-nitroalkan-2-ones derived from Baylis–Hillman acetates, providing a facile protocol for synthesis of naphthalenes, phenanthrenes, and carbazoles has been described.