3-Methoxyaniline → N-(3-Methoxyphenyl)-4-methyl-3-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-benzamide

HRID 1988879Notes

Reaction equation

HRID 1988879 reaction equation
[CH3:1][C:2]1[CH:10]=[CH:9][C:5]([C:6](O)=[O:7])=[CH:4][C:3]=1[B:11]1[O:15][C:14]([CH3:17])([CH3:16])[C:13]([CH3:19])([CH3:18])[O:12]1.[CH3:20][O:21][C:22]1[CH:23]=[C:24]([CH:26]=[CH:27][CH:28]=1)[NH2:25].CCN(C(C)C)C(C)C.CN(C(ON1N=NC2C=CC=NC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F>CN(C=O)C>[CH3:20][O:21][C:22]1[CH:23]=[C:24]([NH:25][C:6](=[O:7])[C:5]2[CH:9]=[CH:10][C:2]([CH3:1])=[C:3]([B:11]3[O:12][C:13]([CH3:18])([CH3:19])[C:14]([CH3:17])([CH3:16])[O:15]3)[CH:4]=2)[CH:26]=[CH:27][CH:28]=1

Participants

6

Reactant 4

HCID 108243-MethoxyanilineHCID 81531DiisopropylethylamineHCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 160860864-Methyl-3-(tetramethyl-1,3,2-dioxaborolan-2-yl)benzoic acid2×

Product 1

HCID 59791522N-(3-Methoxyphenyl)-4-methyl-3-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-benzamideYield 73.5%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

4-Methyl-3-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-benzoic acid (Intermediate 4) (2 g) was dissolved in DMF (20 ml). To this was added 3-methoxyaniline (0.985 g), DIPEA (4 ml) and HATU (3.05 g). The mixture was stirred for 18 h at room temp. The solvent was removed under vacuum and the residue was partitioned between ethyl acetate (250 ml) and water (50 ml). The organic layer was dried (magnesium sulphate) concentrated under vacuum and purified using a silica Biotage cartridge (90 g) eluting with 1:4 ethyl acetate/cyclohexane to give the title compound as a white solid (2.06 g).

Workup

  1. customThe solvent was removed under vacuum
  2. customthe residue was partitioned between ethyl acetate (250 ml) and water (50 ml)
  3. dry with materialThe organic layer was dried (magnesium sulphate)
  4. concentrationconcentrated under vacuum
  5. custompurified
  6. washeluting with 1:4 ethyl acetate/cyclohexane

Sources & evidence

ORD record
ord-51bcc981ae6044e8889489b1673e0f57
Source dataset
uspto-grants-2010_01
Patent number
US07642276B2

Reaction notes

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