2,4-Difluorophenylacetone → (S)-ethyl 2-tert-butoxy-2-(5,7-difluoro-3-methyl-1-(trifluoromethylsulfonyloxy)naphthalen-2-yl)acetate

Participants

Reaction Steps

(S)-ethyl 2-tert-butoxy-2-(5,7-difluoro-3-methyl-1-(trifluoromethylsulfonyloxy)naphthalen-2-yl)acetate was prepared in a similar was as (S)-ethyl 2-(6-bromo-3-methyl-1-(trifluoromethylsulfonyloxy)naphthalen-2-yl)-2-tert-butoxyacetate in Example 20, except using 1-(2,4-difluorophenyl)propan-2-one instead of 1-(3-bromophenyl)propan-2-one. 1H-NMR: 400 MHz, (CDCl3) δ: 7.82 (s, 1H), 7.39 (d, J=5.47 Hz, 1H), 6.99 (m, 1H), 5.63 (s, 1H), 4.18 (m, 2H), 2.49 (s, 3H), 1.11 (s+t, 12H). 19F-NMR: 377 MHz, (CDCl3) δ: −73.27 (s, 3F), −109.1 (m, 1F), −117.5 (m, 1F).

Provenance & Evidence