4-Benzyloxy-phenylboronic acid → 2'-amino-6-(4-(benzyloxy)phenyl)-1'-methyl-2-phenylspiro[chroman-4,4'-imidazol]-5'(1'H)-one

HRID 1408775Notes

Reaction equation

HRID 1408775 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.[CH2:25]([O:32][C:33]1[CH:38]=[CH:37][C:36](B(O)O)=[CH:35][CH:34]=1)[C:26]1[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=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:36]4[CH:37]=[CH:38][C:33]([O:32][CH2:25][C:26]5[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=5)=[CH:34][CH:35]=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

6

Reactant 2

HCID 27343144-Benzyloxy-phenylboronic acidHCID 584237682'-amino-6-bromo-1'-methyl-2-phenylspiro[chroman-4,4'-imidazol]-5'(1'H)-one

Product 1

HCID 584242332'-amino-6-(4-(benzyloxy)phenyl)-1'-methyl-2-phenylspiro[chroman-4,4'-imidazol]-5'(1'H)-oneYield 7%

Reagents, catalysts & solvents 3

HCID 178418476HCID 178418476, compoundCatalystHCID 10796Cesium carbonateSolventHCID 312751,4-DioxaneSolvent

Procedure

Pd(PPh3)2Cl2 (10 mg, 0.01 mmol) in a 10 mL of flask under Ar2 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-(benzyloxy)phenylboronic acid (24 mg, 0.104 mmol). The mixture was heated under 120 at Ar2 under microwave for 30 minutes. The reaction mixture was concentrated in vacuo to give the residue, which was purified preparative TLC and HPLC to give 2′-amino-6-(4-(benzyloxy)phenyl)-1′-methyl-2-phenylspiro[chroman-4,4′-imidazol]-5′(1′H)-one (1.75 mg, 7%). 1H-NMR (MeOD): 2.46 (m, 1H), 2.59 (m, 1H), 3.29 (s, 3H), 5.12 (s, 2H), 5.83 (m, 1H), 7.04 (m, 2H), 7.09 (m, 1H), 7.31 (m, 1H), 7.38 (m, 4H), 7.45 (m, 4H), 7.50 (m, 4H), 7.56 (m, 1H).

Workup

  1. temperatureThe mixture was heated under 120 at Ar2 under microwave for 30 minutes
  2. concentrationThe reaction mixture was concentrated in vacuo
  3. customto give the residue, which
  4. customwas purified preparative TLC and HPLC

Sources & evidence

ORD record
ord-fe6d3eacfab34c309cb6ca2201b2e500
Source dataset
uspto-grants-2014_12
Patent number
US08921359B2

Reaction notes

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