N1,N1,N2-trimethyl-N2-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)ethane-1,2-diamine → (R)-N,N-dimethyl-1-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)pyrrolidin-3-amine

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Reaction Steps

The title compound was synthesized according to the synthesis of N,N,N′-trimethyl-N′-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)ethane-1,2-diamine, substituting (R)-1-(4-iodophenyl)-N,N-dimethylpyrrolidin-3-amine (300 mg, 0.95 mmol). The title compound was purified by silica gel chromatography (MeOH/CH2Cl2, 2:98 to 12:88) as a yellow solid (95 mg, 32%). 1H NMR (400 MHz, MeOD) δ 7.58 (d, J=7.6 Hz, 2H), 6.52 (d, J=7.8 Hz, 2H), 3.55-3.51 (m, 1H), 3.48-3.43 (m, 1H), 3.32-3.26 (m, 1H), 3.15-3.11 (m, 1H), 2.92-2.86 (m, 1H), 2.55 (s, 3H), 2.32 (s, 6H), 2.28-2.22 (m, 1H), 1.94-1.86 (m, 1H); MS ESI 317.2 [M+H]+, calcd for [C18H29BN2O2+H]+ 317.23.

Provenance & Evidence