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645419-13-2

1-(6'-Aminospiro[cyclopropane-1,3'-indolin]-1'-yl)ethanone synthesis

3synthesis methods
-

Yield:645419-13-2 90%

Reaction Conditions:

with hydrogenchloride;Pd-C in methanol;ethanol;

Steps:

2 DC-2; 1-Acetyl-6-amino-1,2-dihydro-3-spiro-1'-cyclopropyl-1H-indole

DC-2; 1-Acetyl-6-amino-1,2-dihydro-3-spiro-1'-cyclopropyl-1H-indole A mixture of 1-acetyl-6-nitro-1,2-dihydro-3-spiro-1'-cyclopropyl-1H-indole (383 mg, 2 mmol) and Pd-C (10%, 100 mg) in EtOH (50 mL) was stirred at room temperature under H2 (1 atm) for 1.5 h. The catalyst was filtered off and the filtrate was concentrated under reduced pressure. The residue was treated with HCl/MeOH to give 1-acetyl-6-amino-1,2-dihydro-3-spiro-1'-cyclopropyl-1H-indole (DC-2) (300 mg, 90%) as a hydrochloride salt.

References:

US2011/98311,2011,A1 US2012/309758,2012,A1

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