Ethyl Acetate → 7-Iodo-2-(4-butyl-benzyl)-2,3-dihydro-isoindol-1-one

HRID 2427628Notes

Reaction equation

CO[C:3](=[O:13])[C:4]1[C:9]([I:10])=[CH:8][CH:7]=[CH:6][C:5]=1[CH2:11]Br.[CH2:14]([C:18]1[CH:25]=[CH:24][C:21]([CH2:22][NH2:23])=[CH:20][CH:19]=1)[CH2:15][CH2:16][CH3:17].C([O-])([O-])=O.[K+].[K+].C(OCC)(=O)C>C1(C)C=CC=CC=1.CCCCCC>[I:10][C:9]1[CH:8]=[CH:7][CH:6]=[C:5]2[C:4]=1[C:3](=[O:13])[N:23]([CH2:22][C:21]1[CH:24]=[CH:25][C:18]([CH2:14][CH2:15][CH2:16][CH3:17])=[CH:19][CH:20]=1)[CH2:11]2

Participants

Conditions

Temperature: 100 °C

Procedure

A mixture of 2-bromomethyl-6-iodo-benzoic acid methyl ester (0.107 g, 0.3 mmol), 4-butyl-benzylamine (0.088 mL, 0.5 mmol), and K2CO3 (0.083 g, 0.6 mmol) in toluene (5 mL) was heated with stirring at 100° C. for 2 h. Workup and silica gel column chromatography using 30% ethyl acetate in hexane afforded 7-iodo-2-(4-butyl-benzyl)-2,3-dihydro-isoindol-1-one (0.063 g, 50%). 1H NMR (300 MHz, CDCl3): δ (ppm) 0.88 (t, 3H), 1.34 (m, 2H), 1.56 (m, 2H), 2.58 (t, 2H), 4.16 (s, 2H), 4.76 (s, 2H), 7.14-7.36 (m, 6H), 7.85 (d, 1H). GC-MS: m/z 405 (M)+, 348(M−57)+.

Workup

temperaturewas heated

Sources & evidence

ORD record: ord-9612cddbc20e44dc8be9cb6d4fbc1493
Source dataset: uspto-grants-2011_06
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07968570B2

Reaction notes

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