Potassium Carbonate → 3-{5-[6-(4-{2-[5-(2-Methoxycarbonylamino-3-methyl-butyryl)-5-aza-spiro[2.4]hept-6-yl]-3H-imidazol-4-yl]-phenyl)-naphthalen-2-yl]-1H-imidazol-2-yl]-2-aza-bicyclo[2.2.1]heptane-2-carboxylic acid tert-butyl ester

HRID 417697Notes

Reaction equation

HRID 417697 reaction equation
[CH3:1][O:2][C:3](=[O:38])[NH:4][CH:5]([C:9]([N:11]1[CH:17]([C:18]2[NH:19][C:20]([C:23]3[CH:28]=[CH:27][C:26](B4OC(C)(C)C(C)(C)O4)=[CH:25][CH:24]=3)=[CH:21][N:22]=2)[CH2:16][C:13]2([CH2:15][CH2:14]2)[CH2:12]1)=[O:10])[CH:6]([CH3:8])[CH3:7].[C:39]([O:43][C:44]([N:46]1[CH:51]([C:52]2[NH:53][C:54]([C:57]3[CH:66]=[CH:65][C:64]4[C:59](=[CH:60][CH:61]=[C:62](Br)[CH:63]=4)[CH:58]=3)=[CH:55][N:56]=2)[CH:50]2[CH2:68][CH:47]1[CH2:48][CH2:49]2)=[O:45])([CH3:42])([CH3:41])[CH3:40].C([O-])([O-])=O.[K+].[K+]>COCCOC.CCOC(C)=O.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[C:39]([O:43][C:44]([N:46]1[CH:51]([C:52]2[NH:53][C:54]([C:57]3[CH:66]=[CH:65][C:64]4[C:59](=[CH:60][CH:61]=[C:62]([C:26]5[CH:25]=[CH:24][C:23]([C:20]6[NH:19][C:18]([CH:17]7[CH2:16][C:13]8([CH2:14][CH2:15]8)[CH2:12][N:11]7[C:9](=[O:10])[CH:5]([NH:4][C:3]([O:2][CH3:1])=[O:38])[CH:6]([CH3:8])[CH3:7])=[N:22][CH:21]=6)=[CH:28][CH:27]=5)[CH:63]=4)[CH:58]=3)=[CH:55][N:56]=2)[CH:50]2[CH2:68][CH:47]1[CH2:48][CH2:49]2)=[O:45])([CH3:42])([CH3:41])[CH3:40]

Participants

7

Reactant 3

HCID 11430Potassium CarbonateHCID 66620446[2-Methyl-1-(6-{5-[4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-phenyl]-1H-imidazol-2-yl}-5-aza-spiro[2.4]heptane-5-carbonyl)-propyl]-carbamic acid methyl esterHCID 666212463-[5-(6-Bromo-naphthalen-2-yl)-1H-imidazol-2-yl]-2-aza-bicyclo[2.2.1]heptane-2-carboxylic acid tert-butyl ester

Product 1

HCID 666203703-{5-[6-(4-{2-[5-(2-Methoxycarbonylamino-3-methyl-butyryl)-5-aza-spiro[2.4]hept-6-yl]-3H-imidazol-4-yl]-phenyl)-naphthalen-2-yl]-1H-imidazol-2-yl]-2-aza-bicyclo[2.2.1]heptane-2-carboxylic acid tert-butyl esterYield 37.1%

Reagents, catalysts & solvents 3

HCID 178418397HCID 178418397, compoundCatalystHCID 80711,2-DimethoxyethaneSolventHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
80 °C

Procedure

To a solution of [2-Methyl-1-(6-{5-[4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-phenyl]-1H-imidazol-2-yl}-5-aza-spiro[2.4]heptane-5-carbonyl)-propyl]-carbamic acid methyl ester (0.95 g, 1.82 mmol) and 3-[5-(6-Bromo-naphthalen-2-yl)-1H-imidazol-2-yl]-2-aza-bicyclo[2.2.1]heptane-2-carboxylic acid tert-butyl ester (0.96 g, 1.82 mmol, 1 equiv.) in DME (20 mL) was added K2CO3 (aqueous, 2 M, 3.6 mL, 7.2 mmol, 4 equiv.) and Pd(PPh3)4 (0.11 g, 0.09 mmol, 0.05 equiv.). The slurry was degassed with argon for 5 minutes and heated to 80° C. for 12 hours. The resulting reaction mixture was diluted with EtOAc and washed with water. The aqueous layer was back-extracted with EtOAc and the combined organic layers were dried over Na2SO4 and concentrated. The crude oil was purified by column chromatography (SiO2, 50→100% EtOAc in Hexanes) to provide 3-{5-[6-(4-{2-[5-(2-Methoxycarbonylamino-3-methyl-butyryl)-5-aza-spiro[2.4]hept-6-yl]-3H-imidazol-4-yl}-phenyl)-naphthalen-2-yl]-1H-imidazol-2-yl}-2-aza-bicyclo[2.2.1]heptane-2-carboxylic acid tert-butyl ester (0.53 g, 37%) as a yellow powder. LCMS-ESI+: calc'd for C46H53N7O5: 783.4 (M+). Found: 784.3 (M+H+).

Workup

  1. customThe slurry was degassed with argon for 5 minutes
  2. customThe resulting reaction mixture
  3. washwashed with water
  4. extractionThe aqueous layer was back-extracted with EtOAc
  5. dry with materialthe combined organic layers were dried over Na2SO4
  6. concentrationconcentrated
  7. customThe crude oil was purified by column chromatography (SiO2, 50→100% EtOAc in Hexanes)

Sources & evidence

ORD record
ord-59a7ae1d9c4547f89bcda5c1a1b64db0
Source dataset
uspto-grants-2012_01
Patent number
US08088368B2

Reaction notes

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