Diisopropylethylamine → N-((3,3-bis(fluoromethyl)-1-hydroxy-1,3-dihydrobenzo[c][1,2]oxaborol-6-yl)methyl)-4-(5-(3,5-dichlorophenyl)-5-(trifluoromethyl)-4,5-dihydroisoxazol-3-yl)-2-methyl-benzamide

HRID 1037029Notes

Reaction equation

HRID 1037029 reaction equation
[Cl:1][C:2]1[CH:3]=[C:4]([C:9]2([C:24]([F:27])([F:26])[F:25])[O:13][N:12]=[C:11]([C:14]3[CH:22]=[CH:21][C:17]([C:18]([OH:20])=O)=[C:16]([CH3:23])[CH:15]=3)[CH2:10]2)[CH:5]=[C:6]([Cl:8])[CH:7]=1.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.Cl.[NH2:62][CH2:63][C:64]1[CH:65]=[CH:66][C:67]2[C:71]([CH2:74][F:75])([CH2:72][F:73])[O:70][B:69]([OH:76])[C:68]=2[CH:77]=1>CN(C=O)C>[F:75][CH2:74][C:71]1([CH2:72][F:73])[O:70][B:69]([OH:76])[C:68]2[CH:77]=[C:64]([CH2:63][NH:62][C:18](=[O:20])[C:17]3[CH:21]=[CH:22][C:14]([C:11]4[CH2:10][C:9]([C:4]5[CH:3]=[C:2]([Cl:1])[CH:7]=[C:6]([Cl:8])[CH:5]=5)([C:24]([F:27])([F:25])[F:26])[O:13][N:12]=4)=[CH:15][C:16]=3[CH3:23])[CH:65]=[CH:66][C:67]1=2

Participants

6

Reactant 4

HCID 81531DiisopropylethylamineHCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 231598114-(5-(3,5-Dichlorophenyl)-5-(tri fluoromethyl)-4,5-dihydroisoxazol-3-yl)-2-methylbenzoic acidHCID 866854756-(aminomethyl)-3,3-bis(fluoromethyl)benzo[c][1,2]oxaborol-1(3H)-ol hydrochloride

Product 1

HCID 71576076N-((3,3-bis(fluoromethyl)-1-hydroxy-1,3-dihydrobenzo[c][1,2]oxaborol-6-yl)methyl)-4-(5-(3,5-dichlorophenyl)-5-(trifluoromethyl)-4,5-dihydroisoxazol-3-yl)-2-methyl-benzamideYield 33.2%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

A solution of 4-(5-(3,5-dichlorophenyl)-5-(trifluoromethyl)-4,5-dihydroisoxazol-3-yl)-2-methyl-benzoic acid (100 mg, 0.24 mmol) and DIPEA (124 mg, 0.88 mmol) in DMF (5 mL) was stirred at rt for 5 min and then HATU (183 mg, 0.48 mmol) was added. The mixture was stirred for 10 min prior to the addition of 6-(aminomethyl)-3,3-bis(fluoromethyl)benzo[c][1,2]oxaborol-1(3H)-ol hydrochloride (126 mg, 0.44 mmol). And the resulting mixture was stirred at rt overnight. It was then concentrated under vacuum, and the residue was partitioned between 1N HCl and ethyl acetate. The organic layer separated was concentrated under vacuum, and the residue was purified by prep-TLC to provide the final title product (50 mg, 33%). 1H NMR (400 MHz, CDCl3): δ 7.47 (m, 9H), 4.61 (m, 6H), 4.07 (d, 1H), 3.78 (d, 1H), 2.41 (s, 3H) ppm; HPLC purity: 100% at 220 nm and 100% at 254 nm.

Workup

  1. stirringAnd the resulting mixture was stirred at rt overnight
  2. concentrationIt was then concentrated under vacuum
  3. customthe residue was partitioned between 1N HCl and ethyl acetate
  4. customThe organic layer separated
  5. concentrationwas concentrated under vacuum
  6. customthe residue was purified by prep-TLC

Sources & evidence

ORD record
ord-46d49b3822a84270a0a14cc8d73cac7e
Source dataset
uspto-grants-2013_10
Patent number
US08546357B2

Reaction notes

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