2-(Trifluoromethyl)benzeneboronic acid → HCID 178498920, compound

HRID 1423940Notes

Reaction equation

HRID 1423940 reaction equation
[CH3:1][O:2][C:3]([C:5]1[C:6](=[O:17])[S:7][C:8]2[C:13]([C:14]=1[OH:15])=[CH:12][CH:11]=[C:10](Br)[CH:9]=2)=[O:4].[F:18][C:19]([F:30])([F:29])[C:20]1[CH:25]=[CH:24][CH:23]=[CH:22][C:21]=1B(O)O>>[CH3:1][O:2][C:3]([C:5]1[C:6](=[O:17])[S:7][C:8]2[C:13]([C:14]=1[OH:15])=[CH:12][CH:11]=[C:10]([C:21]1[CH:22]=[CH:23][CH:24]=[CH:25][C:20]=1[C:19]([F:30])([F:29])[F:18])[CH:9]=2)=[O:4]

Participants

3

Reactant 2

HCID 27343872-(Trifluoromethyl)benzeneboronic acidHCID 178498916HCID 178498916, compound

Product 1

HCID 178498920HCID 178498920, compound

Procedure

4-Hydroxy-2-oxo-7-(2-trifluoromethyl-phenyl)-2H-thiochromene-3-carboxylic acid methyl ester was prepared from 7-bromo-4-hydroxy-2-oxo-2H-thiochromene-3-carboxylic acid methyl ester (Example 5e) under conditions analogous to Example 7(a) using 2-trifluoromethyl-phenylboronic acid. 1H NMR (200 MHz, CDCl3): δ (ppm)=8.376 (d, 1H), 7.783-7.295 (m, 6H), 4.024 (s, 3H).

Sources & evidence

ORD record
ord-6092c590456d4608a1b92d5600def534
Source dataset
uspto-grants-2015_01
Patent number
US08927591B2

Reaction notes

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