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2-Tert-butoxycarbonyloxy-5-fluoro-4-iodo-indole-1-carboxylic acid tert-butyl ester → 2-tert-butoxycarbonyloxy-4-[3-(1-tert-butoxycarbonyl-3,4-dimethyl-1H-pyrrol-2-yl)-3-hydroxy-prop-1-ynyl]-5-fluoro-indole-1-carboxylic acid tert-butyl ester

HRID 1633794
Notes
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Reaction equation

HRID 1633794 reaction equation
[C:1]([O:5][C:6]([N:8]1[C:16]2[C:11](=[C:12](I)[C:13]([F:17])=[CH:14][CH:15]=2)[CH:10]=[C:9]1[O:19][C:20]([O:22][C:23]([CH3:26])([CH3:25])[CH3:24])=[O:21])=[O:7])([CH3:4])([CH3:3])[CH3:2].[C:27]([O:31][C:32]([N:34]1[CH:38]=[C:37]([CH3:39])[C:36]([CH3:40])=[C:35]1[CH:41]([OH:44])[C:42]#[CH:43])=[O:33])([CH3:30])([CH3:29])[CH3:28]>C1COCC1.C(N(CC)CC)C.[Cu]I.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[C:1]([O:5][C:6]([N:8]1[C:16]2[C:11](=[C:12]([C:43]#[C:42][CH:41]([C:35]3[N:34]([C:32]([O:31][C:27]([CH3:30])([CH3:29])[CH3:28])=[O:33])[CH:38]=[C:37]([CH3:39])[C:36]=3[CH3:40])[OH:44])[C:13]([F:17])=[CH:14][CH:15]=2)[CH:10]=[C:9]1[O:19][C:20]([O:22][C:23]([CH3:26])([CH3:25])[CH3:24])=[O:21])=[O:7])([CH3:4])([CH3:3])[CH3:2]
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

7

Reactant 2

HCID 102058642-Tert-butoxycarbonyloxy-5-fluoro-4-iodo-indole-1-carboxylic acid tert-butyl esterHCID 235502733,4-Dimethyl-2-(1-hydroxy-prop-2-ynyl)-pyrrole-1-carboxylic acid tert-butyl ester

Product 1

HCID 101214212-tert-butoxycarbonyloxy-4-[3-(1-tert-butoxycarbonyl-3,4-dimethyl-1H-pyrrol-2-yl)-3-hydroxy-prop-1-ynyl]-5-fluoro-indole-1-carboxylic acid tert-butyl ester

Reagents, catalysts & solvents 4

HCID 24350
Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)
Catalyst
HCID 178418397HCID 178418397, compoundCatalyst
HCID 8028TetrahydrofuranSolvent
HCID 8471TriethylamineSolvent

Procedure

A solution of 2-tert-butoxycarbonyloxy-5-fluoro-4-iodo-indole-1-carboxylic acid tert-butyl ester (from Example 2 above) (1 g, 2.22 mmol), and 3,4-dimethyl-2-(1-hydroxy-prop-2-ynyl)-pyrrole-1-carboxylic acid tert-butyl ester (from Example 45 above) (1.38 g, 5.54 mmol) in dry THF(12 mL) and triethylamine(Aldrich, 12 mL) was degassed by bubbling argon through the solution for 10 minutes. At this time copper(I) iodide (Aldrich, 84.4 mg, 0.44 mmol) and (Ph3P)4Pd (0.25 g, 0.22 mmol) were added, and the reaction mixture was stirred at room temperature overnight. The reaction mixture was filtered and concentrated in vacuo. Flash chromatography (silica gel, 85:15 hexanes/ethyl acetate) afforded 2-tert-butoxycarbonyloxy-4-[3-(1-tert-butoxycarbonyl-3,4-dimethyl-1H-pyrrol-2-yl)-3-hydroxy-prop-1-ynyl]-5-fluoro-indole-1-carboxylic acid tert-butyl ester as an orange oil. (Yield 0.76 g, 57%).

Workup

  1. customby bubbling argon through the solution for 10 minutes
  2. filtrationThe reaction mixture was filtered
  3. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-2c5c4335f51b4f47bc90e199cedb21a8
Source dataset
uspto-grants-2003_01
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US06504034B2

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes