Ethyl Acetate → 5-Chloro-2-(4-trifluoromethoxy-benzyl)-7-trifluoromethyl-2,3-dihydro-isoindol-1-one

HRID 2427678Notes

Reaction equation

CO[C:3](=[O:17])[C:4]1[C:9]([C:10]([F:13])([F:12])[F:11])=[CH:8][C:7]([Cl:14])=[CH:6][C:5]=1[CH2:15]Br.[F:18][C:19]([F:30])([F:29])[O:20][C:21]1[CH:28]=[CH:27][C:24]([CH2:25][NH2:26])=[CH:23][CH:22]=1.C([O-])([O-])=O.[K+].[K+].C(OCC)(=O)C>C1(C)C=CC=CC=1.CCCCCC>[Cl:14][C:7]1[CH:6]=[C:5]2[C:4](=[C:9]([C:10]([F:11])([F:12])[F:13])[CH:8]=1)[C:3](=[O:17])[N:26]([CH2:25][C:24]1[CH:27]=[CH:28][C:21]([O:20][C:19]([F:18])([F:29])[F:30])=[CH:22][CH:23]=1)[CH2:15]2

Participants

Conditions

Temperature: 100 °C

Procedure

A mixture of 4-chloro-2-bromomethyl-6-trifluoromethyl-benzoic acid methyl ester (1.33 g, 4.0 mmol), 4-trifluoromethoxy-benzylamine (0.610 mL, 4.1 mmol), and K2CO3 (0.691 g, 5.0 mmol) in toluene (10 mL) was heated with stirring at 100° C. for 2 h. Workup and silica gel column chromatography of the product using 30% ethyl acetate in hexane afforded 5-chloro-2-(4-trifluoromethoxy-benzyl)-7-trifluoromethyl-2,3-dihydro-isoindol-1-one (0.770 g, 47%). 1H NMR (300 MHz, CDCl3): δ (ppm) 4.34 (s, 2H), 4.80 (s, 2H) 7.20 (d, 2H), 7.36 (d, 2H), 7.59 (s, 1H), 7.78 (s, 1H). GC-MS: m/z 409 (M)+, 388 (M−21)+.

Workup

temperaturewas heated

Sources & evidence

ORD record: ord-878b25ca485045bc9335a0fcb0597082
Source dataset: uspto-grants-2011_06
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07968570B2

Reaction notes

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