Synthesis of substituted 5-aminomethyl tetrahydro-isoquinolines and dihydro-isoindoles
作者:M. Jonathan Fray、Paul Allen、Paul R. Bradley、Clare E. Challenger、Michael Closier、Tim J. Evans、Mark L. Lewis、John P. Mathias、Carly L. Nichols、Yvonne M. Po-Ba、Hayley Snow、Mark H. Stefaniak、Hannah V. Vuong
DOI:10.1016/j.tet.2006.04.095
日期:2006.7
The synthesis of ten substituted aminomethylene tetrahydro-isoquinolines is described, proceeding in eight steps from 5-hydroxyisoquinoline via reductive amination of N-Boc tetrahydro-isoquinoline 5-carboxaldehyde. Likewise, reductive amination was used to prepare four substituted dihydro-isoindoles from the corresponding aldehyde. The dihydro-isoindole ring system was conveniently accessed via a 2+2+2 cycloaddition reaction. (c) 2006 Elsevier Ltd. All rights reserved.