Nitrogen → N-(4-cyano-2-hydroxymethyl-benzyl)-2-nitro-N-(5,6,7,8-tetrahydro-quinolin-8-yl)-benzenesulfonamide

HRID 1592684Notes

Reaction equation

HRID 1592684 reaction equation
C[O:2][C:3](=O)[C:4]1[CH:9]=[C:8]([C:10]#[N:11])[CH:7]=[CH:6][C:5]=1[CH2:12][N:13]([S:24]([C:27]1[CH:32]=[CH:31][CH:30]=[CH:29][C:28]=1[N+:33]([O-:35])=[O:34])(=[O:26])=[O:25])[CH:14]1[C:23]2[N:22]=[CH:21][CH:20]=[CH:19][C:18]=2[CH2:17][CH2:16][CH2:15]1.[Li+].[BH4-].N#N>C1COCC1.CO>[C:10]([C:8]1[CH:7]=[CH:6][C:5]([CH2:12][N:13]([CH:14]2[C:23]3[N:22]=[CH:21][CH:20]=[CH:19][C:18]=3[CH2:17][CH2:16][CH2:15]2)[S:24]([C:27]2[CH:32]=[CH:31][CH:30]=[CH:29][C:28]=2[N+:33]([O-:35])=[O:34])(=[O:26])=[O:25])=[C:4]([CH2:3][OH:2])[CH:9]=1)#[N:11]

Participants

6

Reactant 3

HCID 947NitrogenHCID 4148881Lithium borohydrideHCID 672716105-Cyano-2-{[(2-nitro-benzenesulfonyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amino}-methyl}-benzoic acid methyl ester

Product 1

HCID 67272149N-(4-cyano-2-hydroxymethyl-benzyl)-2-nitro-N-(5,6,7,8-tetrahydro-quinolin-8-yl)-benzenesulfonamideYield 85%

Reagents, catalysts & solvents 2

HCID 887MethanolSolventHCID 8028TetrahydrofuranSolvent

Procedure

To a solution of 5-cyano-2-{[(2-nitro-benzenesulfonyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amino}-methyl}-benzoic acid methyl ester (2.32 g, 5.72 mmol) dissolved in THF (50 mL) and MeOH (50 mL), LiBH4 (1.26 g, 57.2 mmol) was slowly added. The mixture was stirred at room temperature under a positive pressure of N2 for 2 hours. The mixture was concentrated in vacuo and redissolved in CH2Cl2 (50 mL). Brine (30 mL) was added and the resulting mixture was extracted with CH2Cl2 (2×50 mL). The combined organic extracts were dried (Na2SO4), filtered, and concentrated in vacuo to afford a yellow solid. Purification via column chromatography on silica gel (hexanes:EtOAc, 1:1, v/v) afforded N-(4-cyano-2-hydroxymethyl-benzyl)-2-nitro-N-(5,6,7,8-tetrahydro-quinolin-8-yl)-benzenesulfonamide as a yellow solid (2.32 g, 85%). 1H NMR (CDCl3) δ 1.56 (s, 9H), 1.91 (m, 2H), 2.36 (m, 1H), 2.61 (m, 2H), 2.98 (m, 1H), 4.23 (d, 1H, J=16.7 Hz), 4.61 (m, 2H), 4.90 (d, 1H, J=16.2 Hz), 5.21 (m, 1H), 7.03 (dd, 1H, J=5.3, 9.7 Hz), 7.37 (m, 3H), 7.67 (m, 4H), 7.95 (d, 1H, J=7.9 Hz), 8.16 (d, 1H, J=4.4 Hz).

Workup

  1. concentrationThe mixture was concentrated in vacuo
  2. dissolutionredissolved in CH2Cl2 (50 mL)
  3. additionBrine (30 mL) was added
  4. extractionthe resulting mixture was extracted with CH2Cl2 (2×50 mL)
  5. dry with materialThe combined organic extracts were dried (Na2SO4)
  6. filtrationfiltered
  7. concentrationconcentrated in vacuo
  8. customto afford a yellow solid
  9. customPurification via column chromatography on silica gel (hexanes

Sources & evidence

ORD record
ord-875bb5fd8c1e4b72b8adb64d09c1a3d3
Source dataset
uspto-grants-2007_11
Patent number
US07291631B2

Reaction notes

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