Trifluoroacetic acid → 4-{2-[1-Benzhydryl-6-chloro-2-(2-phenylmethanesulfonylamino-ethyl)-1H-indol-3-yl]-ethoxy}-benzoic acid methyl ester

HRID 2237097Notes

Reaction equation

HRID 2237097 reaction equation
[CH:1]([N:14]1[C:22]2[C:17](=[CH:18][CH:19]=[C:20]([Cl:23])[CH:21]=2)[CH:16]=[C:15]1[CH2:24][CH2:25][NH:26][S:27]([CH2:30][C:31]1[CH:36]=[CH:35][CH:34]=[CH:33][CH:32]=1)(=[O:29])=[O:28])([C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[CH3:37][O:38][C:39](=[O:50])[C:40]1[CH:45]=[CH:44][C:43]([O:46][CH2:47][CH:48]=O)=[CH:42][CH:41]=1.C([SiH](CC)CC)C.C(O)(C(F)(F)F)=O>C(Cl)Cl>[CH3:37][O:38][C:39](=[O:50])[C:40]1[CH:45]=[CH:44][C:43]([O:46][CH2:47][CH2:48][C:16]2[C:17]3[C:22](=[CH:21][C:20]([Cl:23])=[CH:19][CH:18]=3)[N:14]([CH:1]([C:2]3[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=3)[C:8]3[CH:9]=[CH:10][CH:11]=[CH:12][CH:13]=3)[C:15]=2[CH2:24][CH2:25][NH:26][S:27]([CH2:30][C:31]2[CH:36]=[CH:35][CH:34]=[CH:33][CH:32]=2)(=[O:29])=[O:28])=[CH:42][CH:41]=1

Participants

6

Reactant 4

HCID 6422Trifluoroacetic acidHCID 12052TriethylsilaneHCID 11636984methyl 4-formylmethyloxybenzoateHCID 16115154N-[2-(1-Benzhydryl-6-chloro-1H-indol-2-yl)-ethyl]-C-phenylmethanesulfonamide

Product 1

HCID 121136994-{2-[1-Benzhydryl-6-chloro-2-(2-phenylmethanesulfonylamino-ethyl)-1H-indol-3-yl]-ethoxy}-benzoic acid methyl esterYield 35%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To N-[2-(1-Benzhydryl-6-chloro-1H-indol-2-yl)-ethyl]-C-phenyl-methanesulfonamide (0.033M, 1 equiv.) in DCM at 0° C. were added 4-(2-oxo-ethoxy)-benzoic acid methyl ester (3.3 equiv.), triethylsilane (6 equiv.), and TFA (5 equiv.). The reaction mixture was stirred at rt for 2 d 20 h before aqueous workup. Purification by silica gel chromatography followed by reverse phase HPLC gave 4-{2-[1-Benzhydryl-6-chloro-2-(2-phenylmethanesulfonylamino-ethyl)-1H-indol-3-yl]-ethoxy}-benzoic acid methyl ester in 35% yield.

Workup

  1. customPurification by silica gel chromatography

Sources & evidence

ORD record
ord-76a08a631ffa452794804119500d7be1
Source dataset
uspto-grants-2010_05
Patent number
US07713964B2

Reaction notes

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