5-bromo-N,N-dimethylpyridin-2-amine → HCID 66799303, compound

HRID 1193380Notes

Reaction equation

[CH3:1][N:2]([CH:13]1[CH2:18][CH2:17][NH:16][CH2:15][CH2:14]1)[C:3](=[O:12])[O:4][CH2:5][C:6]1[CH:11]=[CH:10][CH:9]=[CH:8][CH:7]=1.Br[C:20]1[CH:21]=[CH:22][C:23]([N:26]([CH3:28])[CH3:27])=[N:24][CH:25]=1>C1(C)C=CC=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.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd]>[CH3:27][N:26]([CH3:28])[C:23]1[N:24]=[CH:25][C:20]([N:16]2[CH2:15][CH2:14][CH:13]([N:2]([CH3:1])[C:3](=[O:12])[O:4][CH2:5][C:6]3[CH:11]=[CH:10][CH:9]=[CH:8][CH:7]=3)[CH2:18][CH2:17]2)=[CH:21][CH:22]=1

Participants

Conditions

Temperature: 80 °C

Procedure

Benzyl methyl(piperidin-4-yl)carbamate (stage 3 AMN-52) (616 mg, 2.4875 mmol, 1.0 eq.), 5-bromo-2-dimethylaminopyridine (500 mg, 2.4875 mmol, 1.0 eq.) and KOBut (557 mg, 4.978 mmol, 2.0 eq.) were taken up in toluene (15 ml) and degassed with N2. BI NAP (77 mg, 0.124 mmol, 0.05 eq.) and Pd2(dba)3 (113 mg, 0.124 mmol, 0.05 eq.) were then added and the mixture was heated for 16 hours at 80° C. After monitoring by TLC, the reaction mixture was filtered over Celite and the filtrate was concentrated under reduced pressure and purified by column chromatography (silica gel, 2% MeOH in DCM). Yield: 67% (500 mg, 1.358 mmol)

Workup

customdegassed with N2
filtrationthe reaction mixture was filtered over Celite
concentrationthe filtrate was concentrated under reduced pressure
custompurified by column chromatography (silica gel, 2% MeOH in DCM)

Sources & evidence

ORD record: ord-5b6425934f3247b6b2b718021c870543
Source dataset: uspto-grants-2014_03
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08680159B2

Reaction notes

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