1,1-Dimethylethyl 4-bromo-2,3-dihydro-1H-indole-1-carboxylate

A mixture of above obtained 4-bromoindoline (759 mg, 3.81 mmol), and (Boc)A mixture of above obtained 4-bromoindoline (759 mg, 3.81 mmol), and (Boc)Obtained above in MeCN (8mL) 4- bromo-indoline (759mg, 3.81mmol) and the mixture of (Boc) 2O (976mg, 4.48mmol) was stirred at room temperature overnight. After evaporation, the residue was dissolved in ethyl acetate (40 mL), washed with water (3 × 20 mL) and brine (1x20mL). The organic layer was concentrated and purified by column chromatography on silica gel (petroleum ether) to give 0601-177 as a white solid (840 mg, 74percent).To a solution of 4-bromoindoline (12.2 g, 61.6 mmol) in dichloromethane (200 mL) was added BocTo a solution A solution of A mixture of the product of Step 1 (1.5 g, 5.0 mmol), allyltributylstannane (2.48 g, 7.5 mmol) and Pd(PPh3)4 (0.58 g, 0.5 mmol) in toluene (20 mL) was stirred at 100 C overnight under a nitrogen atmosphere. The mixture was loaded directly to a silica gel loading cartridge and purified by silica gel column chromatography with EtOAc in hexanes (0 to 10% gradient) to give the title compound (0.88 g, 68%). 1H NMR (CDC13) delta: 7.76 (br. s, 1H), 7.15 (t, J=7.7 Hz, 1H), 6.80 (d, J=7.6 Hz, 1H), 5.88- 5.98 (m, 1H), 5.01-5.11 (m, 2H), 3.93-4.09 (m, 2H), 3.32 (d, J=6.3 Hz, 2H), 3.04 (t, J=8.7 Hz, 2H), 1.57 (s, 9H).A mixture of above obtained 4-bromoindoline (759 mg, 3.81 mmol), and (Boc)20 (976 mg, 4.48 mmol) in MeCN (8 mL) was stirred at room temperature overnight. After evaporated, the residue was dissolved in ethyl acetate (40 mL), washed with water (3 x 20 mL) and brine (1 x 20 mL). The organic layer was concentrated and purified by column chromatography on silica gel (petroleum ether) to give 0601-177(840 mg, 74%>) as a white solid. 1H-NMR (400 MHz. DMSO-A mixture of above obtained 4-bromoindoline (759 mg, 3.81 mmol), and (Boc)2O (976 mg, 4.48 mmol) in MeCN (8 mL) was stirred at room temperature overnight. After evaporated, the residue was dissolved in ethyl acetate (40 mL), washed with water (3×20 mL) and brine (1×20 mL). The organic layer was concentrated and purified by column chromatography on silica gel (petroleum ether) to give 0601-177 (840 mg, 74%) as a white solid. 1H-NMR (400 MHz. DMSO-d6) delta 1.50 (s, 9H), 3.02 (t, J=8.8 Hz, 2H), 3.94 (t, J=8.8 Hz, 2H), 7.12 (m, 2H), 7.56 (m, 1H).Obtained above in MeCN (8mL) 4- bromo-indoline (759mg, 3.81mmol) and the mixture of (Boc) 2O (976mg, 4.48mmol) was stirred at room temperature overnight. After evaporation, the residue was dissolved in ethyl acetate (40 mL), washed with water (3 × 20 mL) and brine (1x20mL). The organic layer was concentrated and purified by column chromatography on silica gel (petroleum ether) to give 0601-177 as a white solid (840 mg, 74%).To a solution of 4-bromoindoline (12.2 g, 61.6 mmol) in dichloromethane (200 mL) was added Boc20 (14.8 g, 67.8 mmol) and DMAP (0.75 g, 6.16 mmol). The mixture was stirred at room temperature for 48 h and then evaporated. The residue was purified by silica gel column chromatography with EtOAc in hexanes (0 to 10% gradient) to provide the title compound (11.5 g, 62.5%). 1H NMR (CDC13) delta: 7.80 (br. s, 1H), 6.98-7.12 (m, 2H), 4.00 (t, J=8.7 Hz, 2H), 3.08 (t, J=8.7 Hz, 2H), 1.50-1.66 (s, 9H).

Molecular Weight:298.18
XLogP3:3.4
Hydrogen Bond Acceptor Count:2
Rotatable Bond Count:2
Exact Mass:297.03644
Monoisotopic Mass:297.03644
Topological Polar Surface Area:29.5
Heavy Atom Count:17
Complexity:300
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes