Trifluoroacetic acid → 1-cyclohexyl-2-(3-furyl)-N-[2-(4-hydroxyphenyl)-1-(2-pyridyl)ethyl]benzimidazole-5-carboxamide

HRID 1007697Notes

Reaction equation

HRID 1007697 reaction equation
[NH2:1][CH2:2][C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][N:4]=1.C(=N)C1C=CC=CC=1.C(OC([O:24][C:25]1[CH:32]=[CH:31][C:28]([CH2:29]Cl)=[CH:27][CH:26]=1)=O)(C)(C)C.[CH:33]1([N:39]2[C:43]3[CH:44]=[CH:45][C:46]([C:48](O)=[O:49])=[CH:47][C:42]=3[N:41]=[C:40]2[C:51]2[CH:55]=[CH:54][O:53][CH:52]=2)[CH2:38][CH2:37][CH2:36][CH2:35][CH2:34]1.C(O)(C(F)(F)F)=O>>[OH:24][C:25]1[CH:26]=[CH:27][C:28]([CH2:29][CH:2]([NH:1][C:48]([C:46]2[CH:45]=[CH:44][C:43]3[N:39]([CH:33]4[CH2:38][CH2:37][CH2:36][CH2:35][CH2:34]4)[C:40]([C:51]4[CH:55]=[CH:54][O:53][CH:52]=4)=[N:41][C:42]=3[CH:47]=2)=[O:49])[C:3]2[CH:8]=[CH:7][CH:6]=[CH:5][N:4]=2)=[CH:31][CH:32]=1

Participants

6

Reactant 5

HCID 6422Trifluoroacetic acidHCID 195092-PyridinemethanamineHCID 428166PhenylmethanimineHCID 4911131-Cyclohexyl-2-(furan-3-yl)-1H-benzimidazole-5-carboxylic acidHCID 226691824-Tert-butoxycarbonyloxy-benzyl chloride

Product 1

HCID 4908561-cyclohexyl-2-(3-furyl)-N-[2-(4-hydroxyphenyl)-1-(2-pyridyl)ethyl]benzimidazole-5-carboxamide

Procedure

2-(Aminomethyl)pyridine was converted to its benzaldehyde imine (benzaldehyde in DCM with 4A molecular sieves) and alkylated with 4-tert-butoxycarbonyloxy-benzyl chloride following an adaptation of the procedure described by Y. Wang et al. (Synth. Commun. 1992, 22, 265). The resulting racemic amine was coupled to the carboxylic acid of example 2 under the usual conditions, and deprotected with TFA to give the tide compound of example 38 after purification by preparative C18 reversed-phase HPLC.

Sources & evidence

ORD record
ord-9fb83fe99c884e2389418ca66a293890
Source dataset
uspto-grants-2004_09
Patent number
US06794404B2

Reaction notes

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