1-Cyclopropylethanamine → 1-[(1-Cyclopropylethyl)amino]-8-fluoro-5H-pyrido[4,3-b]indole-4-carbonitrile

HRID 1971022Notes

Reaction equation

Cl[C:2]1[C:14]2[C:13]3[CH:12]=[C:11]([F:15])[CH:10]=[CH:9][C:8]=3[NH:7][C:6]=2[C:5]([C:16]#[N:17])=[CH:4][N:3]=1.[CH:18]1([CH:21]([NH2:23])[CH3:22])[CH2:20][CH2:19]1.C1C=CC(P(C2C(C3C(P(C4C=CC=CC=4)C4C=CC=CC=4)=CC=C4C=3C=CC=C4)=C3C(C=CC=C3)=CC=2)C2C=CC=CC=2)=CC=1.CC(C)([O-])C.[Na+]>C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd]>[CH:18]1([CH:21]([NH:23][C:2]2[C:14]3[C:13]4[CH:12]=[C:11]([F:15])[CH:10]=[CH:9][C:8]=4[NH:7][C:6]=3[C:5]([C:16]#[N:17])=[CH:4][N:3]=2)[CH3:22])[CH2:20][CH2:19]1

Participants

Conditions

Temperature: 85 °C

Procedure

1-Chloro-8-fluoro-5H-pyrido[4,3-b]indole-4-carbonitrile (400 mg, 1.63 mmol), 1-cyclopropylethanamine (594 mg, 4.89 mmol), Pd2(dba)3 (74.6 mg, 0.081 mmol), BINAP (152 mg, 0.24 mmol), and sodium tert-butoxide (782 mg, 8.14 mmol) were placed in a sealed tube. The mixture was evacuated and backfilled with argon three times. Fully degassed DME (8.1 ml) was added. The tube was sealed and the reaction was heated to 85° C. and stirred for 20 hrs. The reaction was cooled to ambient temperature, concentrated in vacuo, and directly purified via flash chromatography to afford the title compound. LRMS (APCI) calc'd for (C17H16FN4) [M+H]+, 295.1. found 295.0.

Workup

customThe mixture was evacuated
additionFully degassed DME (8.1 ml) was added
customThe tube was sealed
temperatureThe reaction was cooled to ambient temperature
concentrationconcentrated in vacuo
customdirectly purified via flash chromatography

Sources & evidence

ORD record: ord-bd8a8a6b38d14496af9496567f395c29
Source dataset: uspto-grants-2013_04
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08431569B2

Reaction notes

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