4-(Trifluoromethyl)phenylboronic acid → HCID 58424655, compound

HRID 1408655Notes

Reaction equation

[NH2:1][C:2]1[N:3]([CH3:24])[C:4](=[O:23])[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]=[CH:19][CH:18]=3)[CH2:7]2)[N:6]=1.[F:25][C:26]([F:37])([F:36])[C:27]1[CH:32]=[CH:31][C:30](B(O)O)=[CH:29][CH:28]=1>O1CCOCC1.C([O-])([O-])=O.[Cs+].[Cs+].Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1>[NH2:1][C:2]1[N:3]([CH3:24])[C:4](=[O:23])[C:5]2([C:15]3[C:10](=[CH:11][CH:12]=[C:13]([C:30]4[CH:31]=[CH:32][C:27]([C:26]([F:37])([F:36])[F:25])=[CH:28][CH:29]=4)[CH:14]=3)[O:9][CH:8]([C:17]3[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=3)[CH2:7]2)[N:6]=1

Participants

Conditions

Temperature: 120 °C

Procedure

Pd(PPh3)2Cl2 (10 mg, 0.01 mmol) in a 10 mL flask under Ar was treated sequentially with 2′-amino-6-bromo-1′-methyl-2-phenylspiro[chroman-4,4′-imidazol]-5′(1′H)-one (20 mg, 0.052 mmol) in 1,4-dioxane (1 mL), Cs2CO3 (2 N, 0.3 mL) and 4-(trifluoromethyl)phenylboronic acid (20 mg, 0.104 mmol). The mixture was heated at 120° C. under Ar in a microwave reactor for 30 minutes. The reaction mixture was concentrated in vacuo to give the residue, which was purified by preparative HPLC twice to give pure 2′-amino-1′-methyl-2-phenyl-6-(4-(trifluoro methyl)phenyl)spiro[chroman-4,4′-imidazol]-5′(1′H)-one (2.87 mg, 12%). 1H-NMR (MeOD): 2.46 (m, 1H), 2.60 (m, 1H), 3.32 (s, 3H), 5.25 & 5.85 (m, 1H), 7.14 (m, 1H), 7.37-7.54 (m, 6H), 7.66-7.78 (m, 5H).

Workup

concentrationThe reaction mixture was concentrated in vacuo
customto give the residue, which
customwas purified by preparative HPLC twice

Sources & evidence

ORD record: ord-47a3079c117b4100a3912220f9516cee
Source dataset: uspto-grants-2014_12
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08921359B2

Reaction notes

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