An alternative Au(I)-catalyzed synthetic route to functionalized 1,2-dihydroquinolines is reported. This novel approach is based on the use of -ethoxycarbonyl protected--propargylanilines as building blocks that rapidly undergo the IMHA reaction affording the 6- cyclization product in good to high yields. In the presence of -ethoxycarbonyl--propargyl-substituted anilines, the regiodivergent cyclization at the -/-position is achieved by the means of catalyst fine tuning.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8199670 | PMC |
| http://dx.doi.org/10.3390/molecules26113366 | DOI Listing |
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