N-Iodosuccinimide → tert-butyl 2-(8-(benzo[d]thiazol-2-yl((2-(trimethylsilyl)ethoxy)methyl)carbamoyl)-3,4-dihydroisoquinolin-2(1H)-yl)-5-iodothiazole-4-carboxylate

HRID 1518303Notes

Reaction equation

HRID 1518303 reaction equation
[S:1]1[C:5]2[CH:6]=[CH:7][CH:8]=[CH:9][C:4]=2[N:3]=[C:2]1[N:10]([CH2:35][O:36][CH2:37][CH2:38][Si:39]([CH3:42])([CH3:41])[CH3:40])[C:11]([C:13]1[CH:14]=[CH:15][CH:16]=[C:17]2[C:22]=1[CH2:21][N:20]([C:23]1[S:24][CH:25]=[C:26]([C:28]([O:30][C:31]([CH3:34])([CH3:33])[CH3:32])=[O:29])[N:27]=1)[CH2:19][CH2:18]2)=[O:12].C1C(=O)N([I:50])C(=O)C1>C(Cl)Cl.CCOC(C)=O>[S:1]1[C:5]2[CH:6]=[CH:7][CH:8]=[CH:9][C:4]=2[N:3]=[C:2]1[N:10]([CH2:35][O:36][CH2:37][CH2:38][Si:39]([CH3:42])([CH3:41])[CH3:40])[C:11]([C:13]1[CH:14]=[CH:15][CH:16]=[C:17]2[C:22]=1[CH2:21][N:20]([C:23]1[S:24][C:25]([I:50])=[C:26]([C:28]([O:30][C:31]([CH3:34])([CH3:33])[CH3:32])=[O:29])[N:27]=1)[CH2:19][CH2:18]2)=[O:12]

Participants

5

Reactant 2

HCID 120273N-IodosuccinimideHCID 59447538tert-butyl 2-(8-(benzo[d]thiazol-2-yl((2-(trimethylsilyl)ethoxy)methyl)carbamoyl)-3,4-dihydroisoquinolin-2(1H)-yl)thiazole-4-carboxylate

Product 1

HCID 59447574tert-butyl 2-(8-(benzo[d]thiazol-2-yl((2-(trimethylsilyl)ethoxy)methyl)carbamoyl)-3,4-dihydroisoquinolin-2(1H)-yl)-5-iodothiazole-4-carboxylateYield 98.4%

Reagents, catalysts & solvents 2

HCID 6344DichloromethaneSolventHCID 8857Ethyl AcetateSolvent

Procedure

To a solution of tert-butyl 2-(8-(benzo[d]thiazol-2-yl((2-(trimethylsilyl)ethoxy)methyl)carbamoyl)-3,4-dihydroisoquinolin-2(1H)-yl)thiazole-4-carboxylate (38B) (2.2 g, 3.53 mmol) in DCM (30 mL) was added NIS (0.795 g, 3.53 mmol). The mixture was stirred at r.t. overnight. The mixture was then diluted with EtOAc (300 mL) and washed with water, brine, dried over Na2SO4, and concentrated under reduced pressure. The crude material was purified by column chromatography on silica gel eluting with 5% EtOAc in hexanes to provide 2.6 g of the desired product. LC/MS (APCI): m/z 749.2 (M+H).

Workup

  1. washwashed with water, brine
  2. dry with materialdried over Na2SO4
  3. concentrationconcentrated under reduced pressure
  4. customThe crude material was purified by column chromatography on silica gel eluting with 5% EtOAc in hexanes

Sources & evidence

ORD record
ord-690986aaf2664ef2b8d8b0c4393378d3
Source dataset
uspto-grants-2012_07
Patent number
US08232273B2

Reaction notes

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