1-Bromo-4-(1,4-dibromobutyl)benzene → (5R*,6S*)-6-(4-Bromophenyl)-3-(3,5-dichlorophenyl)-2,4-dioxo-1,3-diazaspiro[4.4]nonane-1-carboxylic acid tert-butyl ester

Beteiligte Stoffe

Reaktionsschritte

Using the same procedure as in Example 1 starting from 1-bromo-4-(1,4-dibromobutyl)benzene (153 mg, 0.4 mmol) (Preparation 4) and 3-(3,5-dichlorophenyl)-2,4-dioxoimidazolidine-1-carboxylic acid tert-butyl ester (113 mg, 0.33 mmol) (Preparation 11), the above-titled compound was obtained (33 mg) as a white solid. 1H NMR (CDCl3): 7.48 (2H, d, J=8.3 Hz), 7.30 (1H, m), 7.07 (2H, d, J=8.3 Hz ), 6.52 (2H, m), 4.06 (1H, dd, J1=13.1 Hz, J2=5.5 Hz), 2.35-2.6 (3H, m), 2-2.35 (3H, m), 1.66 (9H, s).

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