1-Bromo-2,3-dichlorobenzene → tert-Butyl 3-(2,3-dichlorophenyl)-3-hydroxypyrrolidin-1-carboxylate

Beteiligte Stoffe

Reaktionsschritte

Preparation according to Example 23: 1-bromo-2,3-dichlorobenzene (2.1 g, 9.23 mmol) in dry tetrahydrofuran (40 mL), n-butyllithium (2.5 M in tetrahydrofuran, 3.7 mL, 9.23 mmol), 1-N-boc-3-pyrrolidinone (1.13 g, 6.15 mmol) in dry tetrahydrofuran (10 mL). Purified by flash column chromatography on silica gel (isooctane/ethyl acetate, 4:1 to 1:1). Yield: 1.23 g. MS m/z (rel. intensity, 70 eV) 230 (25), 196 (46), 172 (19), 57 (bp), 56 (29).

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