3-Cyano-4-fluorophenylboronic acid → HCID 46178645, compound

HRID 2096385Notes

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.[C:25]([C:27]1[CH:28]=[C:29](B(O)O)[CH:30]=[CH:31][C:32]=1[F:33])#[N:26]>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:29]4[CH:30]=[CH:31][C:32]([F:33])=[C:27]([CH:28]=4)[C:25]#[N:26])[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 3-cyano-4-fluorophenylboronic acid (17 mg, 0.104 mmol). The mixture was heated under Ar at 120° C. under microwave for 30 min. The reaction mixture was concentrated in vacuo to give the residue, which was purified by preparative HPLC twice to give pure 5-(2′-amino-1′-methyl-5′-oxo-2-phenyl-1′,5′-dihydrospiro[chroman-4,4′-imidazole]-6-yl)-2-fluorobenzonitrile (7 mg, 32%). 1H-NMR (MeOD): 2.15 (m, 1H), 2.29 (t, 1H), 3.12 & 3.18 (s, 3H), 5.30 & 5.89 (m, 1H), 7.03 (m, 1H), 7.21 (m, 1H), 7.31-7.50 (m, 6H), 7.85 (m, 2H).

Workup

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

Sources & evidence

ORD record: ord-6d76a7624db040e1bc3039ab9e4faefd
Source dataset: uspto-grants-2013_05
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08450308B2

Reaction notes

Loading…