C16H22F6IN2P → 6-Benzyl-4-hydroxy-1-iodo-5-oxo-5,6-dihydro-[2,6]naphthyridine-3-carboxylic acid methyl ester

HRID 919757Notes

Reaction equation

HRID 919757 reaction equation
[CH3:1][O:2][C:3]([C:5]1[N:6]=[CH:7][C:8]2[CH:9]=[CH:10][N:11]([CH2:17][C:18]3[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=3)[C:12](=[O:16])[C:13]=2[C:14]=1[OH:15])=[O:4].CC1C=C(C)N=C(C)C=1.CC1C([IH+:40])=C(C)N=C(C)C=1.F[P-](F)(F)(F)(F)F>C(Cl)Cl>[CH3:1][O:2][C:3]([C:5]1[N:6]=[C:7]([I:40])[C:8]2[CH:9]=[CH:10][N:11]([CH2:17][C:18]3[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=3)[C:12](=[O:16])[C:13]=2[C:14]=1[OH:15])=[O:4]

Participants

4

Reactant 2

HCID 46863890C16H22F6IN2PHCID 68297693Methyl 6-benzyl-4-hydroxy-5-oxo-5,6-dihydro-2,6-naphthyridine-3-carboxylate

Product 1

HCID 867141156-Benzyl-4-hydroxy-1-iodo-5-oxo-5,6-dihydro-[2,6]naphthyridine-3-carboxylic acid methyl esterYield 98.3%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Procedure

A mixture of 6-benzyl-4-hydroxy-5-oxo-5,6-dihydro-[2,6]naphthyridine-3-carboxylic acid methyl ester (130 mg, 0.42 mmol) and bis(2,4,6-trimethylpyridine)iodine(I) hexafluorophosphate (1.08 g, 2.10 mmol) in 5 mL of CH2Cl2 was stirred at r.t. for 16 h. The mixture was diluted with CH2Cl2 (50 mL) and washed with dilute sodium bisulfite and 1 M HCl. The organic layer was dried over MgSO4 and concentrated to give 180 mg of the title compound as a pale yellow solid. 1H NMR (CDCl3, 200 MHz): δ=13.56 (s, 1H), 7.20-7.50 (m, 6H), 6.77 (d, 1H, J=7.4 Hz), 5.30 (s, 2H), 3.99 (s, 3H).

Workup

  1. washwashed with dilute sodium bisulfite and 1 M HCl
  2. dry with materialThe organic layer was dried over MgSO4
  3. concentrationconcentrated

Sources & evidence

ORD record
ord-642d3dd6fa434cf699f18f69408f2c18
Source dataset
uspto-grants-2016_03
Patent number
US09271970B2

Reaction notes

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