2-Nitrobenzenesulfonyl chloride → HCID 66787988, compound

HRID 576118Notes

Reaction equation

HRID 576118 reaction equation
[Cl:1][C:2]1[CH:3]=[C:4]([CH:9]2[C:18]3[C:13](=[CH:14][C:15]([O:19][CH3:20])=[CH:16][CH:17]=3)[CH2:12][NH:11][CH2:10]2)[CH:5]=[CH:6][C:7]=1[Cl:8].C(N(CC)C(C)C)(C)C.[N+:30]([C:33]1[CH:38]=[CH:37][CH:36]=[CH:35][C:34]=1[S:39](Cl)(=[O:41])=[O:40])([O-:32])=[O:31]>ClCCl>[Cl:1][C:2]1[CH:3]=[C:4]([CH:9]2[C:18]3[C:13](=[CH:14][C:15]([O:19][CH3:20])=[CH:16][CH:17]=3)[CH2:12][N:11]([S:39]([C:34]3[CH:35]=[CH:36][CH:37]=[CH:38][C:33]=3[N+:30]([O-:32])=[O:31])(=[O:40])=[O:41])[CH2:10]2)[CH:5]=[CH:6][C:7]=1[Cl:8]

Participants

5

Reactant 3

HCID 155402-Nitrobenzenesulfonyl chlorideHCID 81531DiisopropylethylamineHCID 66788063HCID 66788063, compound

Product 1

HCID 66787988HCID 66787988, compoundYield 80%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Procedure

To an ice-cold solution of 4-(3,4-dichlorophenyl)-7-methoxy-1,2,3,4-tetrahydroisoquinoline (2.65 g, 8.6 mmol) and N,N-diisopropylethylamine (1.8 mL, 10.3 mmol) in dichloromethane (80 mL) was slowly added a solution of 2-nitrobenzene-1-sulfonyl chloride (2.1 g, 9.5 mmol) in dichloromethane (10 mL). The mixture was stirred for 2 hours and then quenched with water. The organic layer was washed with brine, dried over sodium sulfate, filtered, and concentrated. The residue was purified by column chromatography (hexanes to ethyl acetate) to give 4-(3,4-dichlorophenyl)-7-methoxy-2-(2-nitrophenylsulfonyl)-1,2,3,4-tetrahydroisoquinoline (3.39 g, 80%) as a yellow solid: 1H NMR (CDCl3, 500 MHz) δ 7.80 (dd, J=8, 1.3 Hz, 1H), 7.67-7.63 (m, 1H), 7.58 (dd, J=7.9, 1.2 Hz, 1H), 7.54-7.50 (m, 1H), 7.15 (d, J=8.3 Hz, 1H), 7.02 (d, J=2.0 Hz, 1H), 6.87 (dd, J=8.3, 2 Hz, 1H), 6.81 (d, J=8.3 Hz, 1H), 6.75 (d, J=2.6 Hz, 1H), 6.73 (s, 1H), 4.77 (d, J=16.0 Hz, 1H), 4.56 (d, J=16.0 Hz, 1H), 4.18 (dd, J=4.9, 4.9 Hz, 1H), 3.82 (dd, J=13.2, 4.5 Hz, 1H), 3.81 (s, 3H), 3.63 (dd, J=13.1, 5.5 Hz, 1H).

Workup

  1. customquenched with water
  2. washThe organic layer was washed with brine
  3. dry with materialdried over sodium sulfate
  4. filtrationfiltered
  5. concentrationconcentrated
  6. customThe residue was purified by column chromatography (hexanes to ethyl acetate)

Sources & evidence

ORD record
ord-0243f9cf700246d2b7bc1c1a4e8864a0
Source dataset
uspto-grants-2015_05
Patent number
US09034899B2

Reaction notes

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