Dichloromethane → Ethyl 3-(5-amino-2-(4-(2-(3-(diethoxyphosphoryl)-3,3-difluoropropoxy)ethoxy)-2-methylphenethyl)benzo[f][1,7]naphthyridin-8-yl)propanoate

HRID 2167669Notes

Reaction equation

HRID 2167669 reaction equation
[NH2:1][C:2]1[C:11]2[N:10]=[CH:9][C:8]([CH2:12][CH2:13][C:14]3[CH:19]=[CH:18][C:17]([OH:20])=[CH:16][C:15]=3[CH3:21])=[CH:7][C:6]=2[C:5]2[CH:22]=[CH:23][C:24]([CH2:26][CH2:27][C:28]([O:30][CH2:31][CH3:32])=[O:29])=[CH:25][C:4]=2[N:3]=1.Br[CH2:34][CH2:35][O:36][CH2:37][CH2:38][C:39]([P:42](=[O:49])([O:46][CH2:47][CH3:48])[O:43][CH2:44][CH3:45])([F:41])[F:40].C(=O)([O-])[O-].[Cs+].[Cs+].C(Cl)Cl>CN(C=O)C>[NH2:1][C:2]1[C:11]2[N:10]=[CH:9][C:8]([CH2:12][CH2:13][C:14]3[CH:19]=[CH:18][C:17]([O:20][CH2:34][CH2:35][O:36][CH2:37][CH2:38][C:39]([P:42]([O:43][CH2:44][CH3:45])([O:46][CH2:47][CH3:48])=[O:49])([F:40])[F:41])=[CH:16][C:15]=3[CH3:21])=[CH:7][C:6]=2[C:5]2[CH:22]=[CH:23][C:24]([CH2:26][CH2:27][C:28]([O:30][CH2:31][CH3:32])=[O:29])=[CH:25][C:4]=2[N:3]=1

Participants

6

Reactant 4

HCID 6344DichloromethaneHCID 10796Cesium carbonateHCID 58166526Diethyl 3-(2-bromoethoxy)-1,1-difluoropropylphosphonateHCID 67065545Ethyl 3-(5-amino-2-(4-hydroxy-2-methylphenethyl)benzo[f][1,7]naphthyridin-8-yl)propanoate

Product 1

HCID 86651456Ethyl 3-(5-amino-2-(4-(2-(3-(diethoxyphosphoryl)-3,3-difluoropropoxy)ethoxy)-2-methylphenethyl)benzo[f][1,7]naphthyridin-8-yl)propanoate

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent2×

Conditions

Temperature
60 °C

Procedure

To a solution of ethyl 3-(5-amino-2-(4-hydroxy-2-methylphenethyl)benzo[f][1,7]naphthyridin-8-yl)propanoate (6-13) (1.0 equiv.) dissolved in DMF (0.14 M) was added a solution of diethyl 3-(2-bromoethoxy)-1,1-difluoropropylphosphonate (6-14: described in Example 7—Step 1) (1.3 equiv.) in DMF (0.7 M) and cesium carbonate (4 equiv.). The reaction was stirred at 60° C. After 1.5 hours (or until reaction is complete by LCMS), DCM (2 volume equivalent) was added to the reaction. The solids (inorganic) were filtered, and the filtrate was concentration. The crude product was purified by Combiflash using 0-5% MeOH in DCM to give ethyl 3-(5-amino-2-(4-(2-(3-(diethoxyphosphoryl)-3,3-difluoropropoxy)ethoxy)-2-methylphenethyl)benzo[f][1,7]naphthyridin-8-yl)propanoate (6-15) as an oil which upon standing became a white solid.

Workup

  1. additionwas added to the reaction
  2. filtrationThe solids (inorganic) were filtered
  3. concentrationconcentration
  4. customThe crude product was purified by Combiflash

Sources & evidence

ORD record
ord-24518c82082048808461a954206e098b
Source dataset
uspto-grants-2015_06
Patent number
US09045470B2

Reaction notes

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