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Triethylamine → tert-butyl ((1S)-2-hydroxy-1-{3-[(trimethylsilyl)ethynyl]benzyl}ethyl)carbamate

HRID 339976
Notes
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Reaction equation

HRID 339976 reaction equation
[OH:1][CH2:2][C@@H:3]([NH:12][C:13](=[O:19])[O:14][C:15]([CH3:18])([CH3:17])[CH3:16])[CH2:4][C:5]1[CH:10]=[CH:9][CH:8]=[C:7](I)[CH:6]=1.C(N(CC)CC)C.[CH3:27][Si:28]([C:31]#[CH:32])([CH3:30])[CH3:29]>[Cu]I.Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1.O1CCCC1>[OH:1][CH2:2][C@@H:3]([NH:12][C:13](=[O:19])[O:14][C:15]([CH3:18])([CH3:17])[CH3:16])[CH2:4][C:5]1[CH:10]=[CH:9][CH:8]=[C:7]([C:32]#[C:31][Si:28]([CH3:30])([CH3:29])[CH3:27])[CH:6]=1
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

7

Reactant 3

HCID 8471TriethylamineHCID 66111TrimethylsilylacetyleneHCID 86681468tert-Butyl [(1S)-2-hydroxy-1-(3-iodobenzyl)ethyl]carbamate

Product 1

HCID 86681467tert-butyl ((1S)-2-hydroxy-1-{3-[(trimethylsilyl)ethynyl]benzyl}ethyl)carbamateYield 93%

Reagents, catalysts & solvents 3

HCID 24350
Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)
Catalyst
HCID 178418476HCID 178418476, compoundCatalyst
HCID 8028TetrahydrofuranSolvent

Conditions

Temperature
65 °C

Procedure

tert-Butyl [(1S)-2-hydroxy-1-(3-iodobenzyl)ethyl]carbamate (1.0 g, 2.6 mmol), copper(I) iodide (0.020 g, 0.11 mmol), bis(triphenylphosphine)palladium(II) chloride (0.074 g, 0.11 mmol), tetrahydrofuran (7 mL), and triethylamine (0.41 mL, 2.9 mmol) were combined. The reaction mixture was stirred under N2 for 5 min. (Trimethylsilyl)acetylene (1.1 mL, 8.0 mmol) was then added. The reaction mixture was stirred at 65° C. for 1 h, then evaporated under vacuum. The residue was purified by combi-flash chromatography to give 0.84 g (91% yield) of the desired product as light brown solid. LC-MS found: 248.0 (M−Boc+H)+.

Workup

  1. additionwas then added
  2. customevaporated under vacuum
  3. customThe residue was purified by combi-flash chromatography

Sources & evidence

ORD record
ord-cf6e89985bda4174937d4743d0083d46
Source dataset
uspto-grants-2014_11
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08895571B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes