3-(Methylsulfonyl)phenylboronic acid → HCID 46178649, compound

HRID 1408614Notes

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.[CH3:25][S:26]([C:29]1[CH:30]=[C:31](B(O)O)[CH:32]=[CH:33][CH:34]=1)(=[O:28])=[O:27]>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:33]4[CH:32]=[CH:31][CH:30]=[C:29]([S:26]([CH3:25])(=[O:28])=[O:27])[CH:34]=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 3-(methylsulfonyl)phenylboronic acid (20.8 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 TLC to give 2′-amino-1′-methyl-6-(3-(methylsulfonyl)phenyl)-2-phenylspiro[chroman-4,4′-imidazol]-5′(1′H)-one (16.89 mg, 70%). 1H-NMR (MeOD): 2.01 (m, 1H), 2.31 (m, 1H), 3.14 (m, 3H), 3.21 (m, 3H), 5.22 (m, 0.2H), 5.83 (m, 0.7H), 6.89 (m, 1H), 7.18 (m, 1H), 7.23 (m, 1H), 7.32 (m, 2H), 7.39 (m, 2H), 7.45 (m, 1H), 7.57 (m, 1H), 7.76 (m, 2H), 7.96 (m, 1H).

Workup

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

Sources & evidence

ORD record: ord-7dd8130b4707438e9bfd978005721c4e
Source dataset: uspto-grants-2014_12
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08921359B2

Reaction notes

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