Methyl iodide → Methyl 5-[3-(4-{1-[(tert-butoxycarbonyl)amino]cyclobutyl}phenyl)-9H-imidazo[1,2-d]pyrido[2,3-b][1,4]benzodiazepin-2-yl]pyridine-2-carboxylate

HRID 1047053Notes

Reaction equation

HRID 1047053 reaction equation
Br[C:2]1[N:3]=[C:4]2[C:10]3[CH:11]=[CH:12][CH:13]=[CH:14][C:9]=3[NH:8][C:7]3[N:15]=[CH:16][CH:17]=[CH:18][C:6]=3[N:5]2[C:19]=1[C:20]1[CH:25]=[CH:24][C:23]([C:26]2([NH:30][C:31](=[O:37])[O:32][C:33]([CH3:36])([CH3:35])[CH3:34])[CH2:29][CH2:28][CH2:27]2)=[CH:22][CH:21]=1.[CH3:38][O:39][C:40]([C:42]1[N:47]=[CH:46][C:45](B(O)O)=[CH:44][CH:43]=1)=[O:41].C([O-])([O-])=O.[Na+].[Na+].C(=O)([O-])[O-].[K+].[K+].IC>CN(C=O)C.CCOC(C)=O.CC(P(C(C)(C)C)C1C=CC(N(C)C)=CC=1)(C)C.CC(P(C(C)(C)C)C1C=CC(N(C)C)=CC=1)(C)C.Cl[Pd]Cl>[C:33]([O:32][C:31]([NH:30][C:26]1([C:23]2[CH:22]=[CH:21][C:20]([C:19]3[N:5]4[C:6]5[CH:18]=[CH:17][CH:16]=[N:15][C:7]=5[NH:8][C:9]5[CH:14]=[CH:13][CH:12]=[CH:11][C:10]=5[C:4]4=[N:3][C:2]=3[C:45]3[CH:44]=[CH:43][C:42]([C:40]([O:39][CH3:38])=[O:41])=[N:47][CH:46]=3)=[CH:25][CH:24]=2)[CH2:27][CH2:28][CH2:29]1)=[O:37])([CH3:35])([CH3:34])[CH3:36]

Participants

9

Reactant 5

HCID 6328Methyl iodideHCID 10340Sodium CarbonateHCID 11430Potassium CarbonateHCID 455881876-(Methoxycarbonyl)pyridine-3-boronic acidHCID 136331865tert-butyl {1-[4-(2-bromo-9H-imidazo[1,2-d]pyrido[2,3-b][1,4]benzodiazepin-3-yl)phenyl]cyclobutyl}carbamate

Product 1

HCID 67503711Methyl 5-[3-(4-{1-[(tert-butoxycarbonyl)amino]cyclobutyl}phenyl)-9H-imidazo[1,2-d]pyrido[2,3-b][1,4]benzodiazepin-2-yl]pyridine-2-carboxylateYield 95%

Reagents, catalysts & solvents 3

HCID 11714597Bis(di-tert-butyl(4-dimethylaminophenyl)phosphine)dichloropalladium(II)CatalystHCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Procedure

A mixture of tert-butyl {1-[4-(2-bromo-9H-imidazo[1,2-d]pyrido[2,3-b][1,4]benzodiazepin-3-yl)phenyl]cyclobutyl}carbamate (50 mg, 0.090 mmol), [6-(methoxycarbonyl)pyridin-3-yl]boronic acid (32 mg, 0.18 mmol), bis (di-tert-butyl(4-dimethylaminophenyl)phosphine)dichloropalladium(II) (6 mg, 0.09 mmol), and 2M Na2CO3 aq. (0.090 mL, 0.18 mmol) in DMF (2.5 mL) was treated with microwave (160° C. for 1 hour). The reaction mixture was added potassium carbonate (30 mg, 0.22 mmol) and iodomethane (0.050 mL, 0.80 mmol) and stirred at r.t for 17 hours. The mixture was diluted with AcOEt, washed with water(×3), brine, dried over Na2SO4, then filtrated through Celite pad. The filtrate was concentrated and the residue was purified by preparative thin-layer chromatography (n-hexane/AcOEt=1:3) to afford the desired product (52 mg, 95%) as a pale yellow solid. 1HNMR (CDCl3) 400 MHz δ: 8.83 (d, J=2.3 Hz, 1H), 8.15 (dd, J=7.4 Hz and 1.7 Hz, 1H), 8.09 (d, J=8.0 Hz, 1H), 8.02 (d, J=4.0 Hz, 1H), 7.41 (d, J=8.0 Hz, 2H), 7.34 (td, J=7.4 Hz and 1.7 Hz, 1H), 7.19-7.17 (m, 3H), 6.96 (d, J=8.0 Hz, 1H), 6.80 (d, J=7.4 Hz, 1H), 6.60 (dd, J=8.0 Hz and 4.6 Hz, 1H), 6.26 (s, 1H), 5.14 (br s, 1H), 3.99 (s, 3H), 2.59-2.53 (m, 2H), 2.51-2.42 (m, 2H), 2.20-2.12 (m, 1H), 1.96-1.88 (m, 1H), 1.40 (br s, 9H). LCMS: 615 [M+H].

Workup

  1. additionwas treated with microwave (160° C. for 1 hour)
  2. washwashed with water(×3), brine
  3. dry with materialdried over Na2SO4
  4. filtrationfiltrated through Celite pad
  5. concentrationThe filtrate was concentrated
  6. customthe residue was purified by preparative thin-layer chromatography (n-hexane/AcOEt=1:3)

Sources & evidence

ORD record
ord-2475118e31d249afbb84d86c1592162b
Source dataset
uspto-grants-2013_10
Patent number
US08569331B2

Reaction notes

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