Potassium Phosphate, Tribasic → tert-butyl {1-[4-(2-phenyl-9H-imidazo[1,2-d]pyrido[2,3-b][1,4]benzodiazepin-3-yl)phenyl]cyclopropyl}carbamate

HRID 1047036Notes

Reaction equation

HRID 1047036 reaction equation
Br[C:2]1[N:6]2[C:7]3[CH:19]=[CH:18][CH:17]=[N:16][C:8]=3[NH:9][C:10]3[CH:15]=[CH:14][CH:13]=[CH:12][C:11]=3[C:5]2=[N:4][C:3]=1[C:20]1[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=1.CC1(C)C(C)(C)OB([C:34]2[CH:39]=[CH:38][C:37]([C:40]3([NH:43][C:44](=[O:50])[O:45][C:46]([CH3:49])([CH3:48])[CH3:47])[CH2:42][CH2:41]3)=[CH:36][CH:35]=2)O1.P([O-])([O-])([O-])=O.[K+].[K+].[K+]>O1CCOCC1.O>[C:20]1([C:3]2[N:4]=[C:5]3[C:11]4[CH:12]=[CH:13][CH:14]=[CH:15][C:10]=4[NH:9][C:8]4[N:16]=[CH:17][CH:18]=[CH:19][C:7]=4[N:6]3[C:2]=2[C:34]2[CH:35]=[CH:36][C:37]([C:40]3([NH:43][C:44](=[O:50])[O:45][C:46]([CH3:48])([CH3:47])[CH3:49])[CH2:42][CH2:41]3)=[CH:38][CH:39]=2)[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=1

Participants

6

Reactant 3

HCID 62657Potassium Phosphate, TribasicHCID 675030133-bromo-2-phenyl-9H-imidazo[1,2-d]pyrido[2,3-b][1,4]benzodiazepineHCID 69087646tert-Butyl (1-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)cyclopropyl)carbamate

Product 1

HCID 68084664tert-butyl {1-[4-(2-phenyl-9H-imidazo[1,2-d]pyrido[2,3-b][1,4]benzodiazepin-3-yl)phenyl]cyclopropyl}carbamateYield 74%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 312751,4-DioxaneSolvent

Conditions

Temperature
80 °C

Procedure

A suspension of 3-bromo-2-phenyl-9H-imidazo[1,2-d]pyrido[2,3-b][1,4]benzodiazepine (50 mg) and tert-butyl {1-[4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]cyclopropyl}carbamate (92 mg) and potassium phosphate (82 mg) and PdCl2(dppf)CH2Cl2 (11 mg) in dioxane (2.5 mL) and H2O (0.25 mL) was degassed for 5 min then stirred at 80° C. for 18 h. The reaction mixture was concentrated under reduced pressure. Purification by column chromatography (0-50% ethyl acetate in hexanes) gave the product (51 mg, 74%). 1HNMR (DMSO-d6) 400 MHz δ: 8.55 (s, 1H), 8.09-8.04 (m, 1H), 7.98-7.93 (m, 1H), 7.70 (br s, 1H), 7.48 (d, J=6.9 Hz, 2H), 7.39-7.06 (m, 10H), 6.94-6.87 (m, 1H), 6.78-6.65 (m, 1H), 1.44-1.08 (m, 13H). LCMS: 542 [M+H].

Workup

  1. customwas degassed for 5 min
  2. concentrationThe reaction mixture was concentrated under reduced pressure
  3. customPurification by column chromatography (0-50% ethyl acetate in hexanes)

Sources & evidence

ORD record
ord-5f36021ce5ea43f48c0da43c5368c80a
Source dataset
uspto-grants-2013_10
Patent number
US08569331B2

Reaction notes

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