1-(tert-Butoxycarbonyl)-2-pyrroleboronic Acid → 4-{1-[4-(tert-butoxylcarbonyl-1H-pyrrol-2-yl)-phenyl]-3-formyl-1H-indol-2-yl}-piperazine-1-carboxylic acid tert-butyl ester

HRID 1678202Notes

Reaction equation

HRID 1678202 reaction equation
[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][N:11]([C:14]2[N:15]([C:25]3[CH:30]=[CH:29][C:28](I)=[CH:27][CH:26]=3)[C:16]3[C:21]([C:22]=2[CH:23]=[O:24])=[CH:20][CH:19]=[CH:18][CH:17]=3)[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[C:32]([O:36][C:37]([N:39]1[CH:43]=[CH:42][CH:41]=[C:40]1B(O)O)=[O:38])([CH3:35])([CH3:34])[CH3:33]>>[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][N:11]([C:14]2[N:15]([C:25]3[CH:30]=[CH:29][C:28]([C:40]4[N:39]([C:37]([O:36][C:32]([CH3:35])([CH3:34])[CH3:33])=[O:38])[CH:43]=[CH:42][CH:41]=4)=[CH:27][CH:26]=3)[C:16]3[C:21]([C:22]=2[CH:23]=[O:24])=[CH:20][CH:19]=[CH:18][CH:17]=3)[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2]

Participants

3

Reactant 2

HCID 27343211-(tert-Butoxycarbonyl)-2-pyrroleboronic AcidHCID 117529254-[3-formyl-1-(4-iodophenyl)-1H-indol-2-yl]-piperazine-1-carboxylic acid tert-butyl ester

Product 1

HCID 113765494-{1-[4-(tert-butoxylcarbonyl-1H-pyrrol-2-yl)-phenyl]-3-formyl-1H-indol-2-yl}-piperazine-1-carboxylic acid tert-butyl esterYield 56%

Procedure

4-[3-Formyl-1-(4-iodophenyl)-1H-indol-2-yl]-piperazine-1-carboxylic acid tert-butyl ester is reacted with 1-(tert-butoxycarbonyl)pyrrole-2-boronic acid as described in Example 66 to afford 4-{1-[4-(tert-butoxylcarbonyl-1H-pyrrol-2-yl)-phenyl]-3-formyl-1H-indol-2-yl}-piperazine-1-carboxylic acid tert-butyl ester as a beige solid (56% yield). ESI/MS 571 (M+1), 515 [M−C(CH3)3]; NMR (CDCl3) 10.28 (1H, s); 8.27 (1H, d, J=6 Hz); 7.59 (2H, d); 7.41 (6H, m); 6.32 (2H, m); 3.36 (8H, m); 1.46 (9H, s); 1.44 (9H, s).

Sources & evidence

ORD record
ord-13af560893754992ab38e613c03c65f5
Source dataset
uspto-grants-2011_08
Patent number
US08008491B2

Reaction notes

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