1,1'-Carbonyldiimidazole → tert-butyl-4-(2-(4-(3-(3-tert-butyl-1-p-tolyl-1H-pyrazol-5-yl)ureido) naphthalen-1-yloxy)ethyl)pyridin-2-ylcarbamate

HRID 2069029Notes

Reaction equation

HRID 2069029 reaction equation
C1N=CN([C:6](N2C=NC=C2)=[O:7])C=1.[C:13]([C:17]1[CH:21]=[C:20]([NH2:22])[N:19]([C:23]2[CH:28]=[CH:27][C:26]([CH3:29])=[CH:25][CH:24]=2)[N:18]=1)([CH3:16])([CH3:15])[CH3:14].[NH2:30][C:31]1[C:40]2[C:35](=[CH:36][CH:37]=[CH:38][CH:39]=2)[C:34]([O:41][CH2:42][CH2:43][C:44]2[CH:49]=[CH:48][N:47]=[C:46]([NH:50][C:51](=[O:57])[O:52][C:53]([CH3:56])([CH3:55])[CH3:54])[CH:45]=2)=[CH:33][CH:32]=1>C(Cl)Cl.CO>[C:53]([O:52][C:51](=[O:57])[NH:50][C:46]1[CH:45]=[C:44]([CH2:43][CH2:42][O:41][C:34]2[C:35]3[C:40](=[CH:39][CH:38]=[CH:37][CH:36]=3)[C:31]([NH:30][C:6]([NH:22][C:20]3[N:19]([C:23]4[CH:24]=[CH:25][C:26]([CH3:29])=[CH:27][CH:28]=4)[N:18]=[C:17]([C:13]([CH3:16])([CH3:15])[CH3:14])[CH:21]=3)=[O:7])=[CH:32][CH:33]=2)[CH:49]=[CH:48][N:47]=1)([CH3:54])([CH3:56])[CH3:55]

Participants

6

Reactant 3

HCID 682631,1'-CarbonyldiimidazoleHCID 29741323-tert-butyl-1-(4-methylphenyl)-1H-pyrazol-5-amineHCID 58416770tert-Butyl 4-(2-(4-aminonaphthalen-1-yloxy)ethyl)pyridin-2-ylcarbamate

Product 1

HCID 58416761tert-butyl-4-(2-(4-(3-(3-tert-butyl-1-p-tolyl-1H-pyrazol-5-yl)ureido) naphthalen-1-yloxy)ethyl)pyridin-2-ylcarbamateYield 83.6%

Reagents, catalysts & solvents 2

HCID 887MethanolSolventHCID 6344DichloromethaneSolvent3×

Procedure

To a stirred suspension of CDI (3.00 g, 18.18 mmol) in DCM (15 mL) was added a solution of the pyrazole amine (5) (4.17 g, 18.18 mmol) in DCM (40 mL) over 1.5 hrs. After 2 hr at RT a solution of the naphthyl amine (22) (3.00 g, 7.91 mmol) in DCM (15 mL) was added. After stirring overnight, the solution was diluted with MeOH (10 mL) and absorbed onto silica gel (30 g) and subjected to column chromatography (SiO2, 330 g, 30% to 100% EtOAc in isohexane and then 0% to 6% MeOH in EtOAc) to give the title compound (23) as a beige solid (4.20 g, 80%): m/z 635 (M+H)+ (ES+).

Workup

  1. customabsorbed onto silica gel (30 g)

Sources & evidence

ORD record
ord-8bee64fa6cd143aca250ee3f8ca9de5c
Source dataset
uspto-grants-2012_10
Patent number
US08299073B2

Reaction notes

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