Several functionalized 7,8-benzo-3-hydroxy-9-azabicyclo[3.3.1]non-3-enes were prepared by two-step cyclocondensation of 1,3-bis-silyl enol ethers with isoquinolinium salts.
Regioselective Synthesis of New 1-Aminopyrroles and 1-Amino-4,5,6,7-tetrahydroindoles by One-Pot ‘Conjugate Addition/Cyclization’ Reactions of 1,3-Bis(silyl enol ethers) with 1,2-Diaza-1,3-butadienes
Unknown functionalized 1-aminopyrroles and 1-amino-4,5,6,7-tetrahydroindoles were prepared under mild conditions and with excellent yields by one-pot 'conjugate addition/cyclization' reactions of 1,3-bis(silyl enolethers) with 1,2-diaza-1,3-butadienes.
6-Alkylidene-2,3-benzo-1,4-diaza-7-oxabicyclo[4.3.0]non-2-enes were prepared by cyclization of 1,3-bis(silyl enol ethers) with quinoxaline. (c) 2007 Elsevier Ltd. All rights reserved.