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. 2021 Nov 19;26(22):6977. doi: 10.3390/molecules26226977
No R R1 R2 Yield % a Yield % b
4 H OCH3 OH 86 92
5 7-OCH3 OCH3 OH 81 89
6 8-OCH3 OCH3 OH 84 94
7 9-OCH3 OCH3 OH 82 91
8 H OH OCH3 - 93
9 7-OCH3 OH OCH3 - 90
10 8-OCH3 OH OCH3 - 91
11 9-OCH3 OH OCH3 - 89
12 H graphic file with name molecules-26-06977-i001.jpg OCH3 - 83
13 7-OCH3 graphic file with name molecules-26-06977-i002.jpg OCH3 - 87
14 8-OCH3 graphic file with name molecules-26-06977-i003.jpg OCH3 - 80
15 9-OCH3 graphic file with name molecules-26-06977-i004.jpg OCH3 - 84
a: Stepwise yield % [15]; b: Multicomponent process yield % for compounds 4–15.