4-Cyanophenylboronic acid → HCID 58424382, compound
Reaction equation
[NH2:1][C:2]1[N:3]([CH3:25])[C:4](=[O:24])[C:5]2([C:15]3[C:10](=[CH:11][CH:12]=[C:13](Br)[CH:14]=3)[O:9][CH:8]([C:17]3[CH:22]=[CH:21][CH:20]=[C:19]([Cl:23])[CH:18]=3)[CH2:7]2)[N:6]=1.[C:26]([C:28]1[CH:33]=[CH:32][C:31](B(O)O)=[CH:30][CH:29]=1)#[N:27]>C1(C)C=CC=CC=1.C([O-])([O-])=O.[Na+].[Na+].C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[NH2:1][C:2]1[N:3]([CH3:25])[C:4](=[O:24])[C:5]2([C:15]3[C:10](=[CH:11][CH:12]=[C:13]([C:30]4[CH:29]=[C:28]([CH:33]=[CH:32][CH:31]=4)[C:26]#[N:27])[CH:14]=3)[O:9][CH:8]([C:17]3[CH:22]=[CH:21][CH:20]=[C:19]([Cl:23])[CH:18]=3)[CH2:7]2)[N:6]=1Participants
Procedure
Pd(PPh3)4 (27 mg, 0.072 mmol) in a 10 mL flask under Ar was treated sequentially with 2′-amino-6-bromo-2-(3-chlorophenyl)-1′-methylspiro[chroman-4,4′-imidazol]-5′(1′H)-one (30 mg, 0.072 mmol) in toluene (5 mL), Na2CO3 (2 N, 2 mL), and 4-cyanophenylboronic acid (12.9 mg, 0.088 mmol). The mixture was refluxed under Ar overnight. The reaction mixture was concentrated in vacuo to give a residue, which was purified by preparative TLC followed by preparative HPLC to give pure 3-(2′-amino-2-(3-chlorophenyl)-1′-methyl-5′-oxo-1′,5′-dihydrospiro[chroman-4,4′-imidazole]-6-yl)benzonitrile (1.03 mg, 3%). 1H-NMR (MeOD): 2.63 (m, 2H), 3.22 (s, 3H), 5.34 (m, 1H), 7.18 (m, 1H), 7.41 (m, 3H), 7.54 (m, 2H), 7.10 (m, 1H), 7.17 (m, 2H), 7.89 (m, 1H), 7.98 (m, 1H).
Workup
- temperatureThe mixture was refluxed under Ar overnight
- concentrationThe reaction mixture was concentrated in vacuo
- customto give a residue, which
- customwas purified by preparative TLC
Sources & evidence
- ORD record
- ord-e651d14b416f4b5a850b3361e6a5d619
- Source dataset
- uspto-grants-2014_12
- Patent number
- US08921359B2
Reaction notes
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