An efficient parallel synthesis of 6,7-dimethoxytetrahydroisoquinolines is reported. The key reaction step is 3,4-dimethoxyphenethylimines reacting with acid chlorides to form an N-acyliminium ion intermediate, which undergoes Pictet-Spengler condensation to give the desired products in >80% yield. Both solution-phase and solid-phase synthesis of 6,7-dimethoxytetrahydroisoquinolines are described.
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| http://dx.doi.org/10.2174/1386207023330624 | DOI Listing |
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