6-Fluoro-1'-(4-methoxybenzyl)-2'-oxo-1',2'-dihydrospiro[1-benzofuran-3,3'-indole]-5-carbonitrile → 6-Fluoro-2'-oxo-1,2'-dihydrospiro[1-benzofuran-3,3'-indole]-5-carbonitrile

Participants

Reaction Steps

Following the procedure as described in EXAMPLE 3.29 and making non-critical variations using 6-fluoro-1′-(4-methoxybenzyl)-2′-oxo-1′,2′-dihydrospiro[1-benzofuran-3,3′-indole]-5-carbonitrile to replace of 6-methoxy-1′-(4-methoxybenzyl)-2′-oxo-1′,2′-dihydrospiro[1-benzofuran-3,3′-indole]-5-carbonitrile, 6-fluoro-2′-oxo-1′,2′-dihydrospiro[1-benzofuran-3,3′-indole]-5-carbonitrile was obtained (85%): mp 222-224° C.; 1H NMR (300 MHz, DMSO-d6) δ 10.70 (s, 1H), 7.40-7.38 (m, 1H), 7.28-7.23 (m, 2H), 7.17-7.15 (m, 1H), 6.99-6.90 (m, 2H), 4.91 (ABq, 2H); MS (ES+) m/z 280.9 (M+1).

Provenance & Evidence