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Potassium Carbonate → 3-((R)-3-Cyclohexyl-5-oxo-morpholin-4-yl)-5-(3,3-dimethyl-but-1-ynyl)-thiophene-2-carboxylic acid methyl ester

HRID 579170
Notes
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Reaction equation

HRID 579170 reaction equation
[CH3:1][O:2][C:3]([C:5]1[S:6][C:7]([C:11]#[C:12][C:13]([CH3:16])([CH3:15])[CH3:14])=[CH:8][C:9]=1Br)=[O:4].C([O-])([O-])=O.[K+].[K+].[CH:23]1([CH:29]2[NH:34][C:33](=[O:35])[CH2:32][O:31][CH2:30]2)[CH2:28][CH2:27][CH2:26][CH2:25][CH2:24]1>[Cu]I.O1CCOCC1>[CH3:1][O:2][C:3]([C:5]1[S:6][C:7]([C:11]#[C:12][C:13]([CH3:16])([CH3:15])[CH3:14])=[CH:8][C:9]=1[N:34]1[C:33](=[O:35])[CH2:32][O:31][CH2:30][C@H:29]1[CH:23]1[CH2:28][CH2:27][CH2:26][CH2:25][CH2:24]1)=[O:4]
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 3

HCID 11430Potassium CarbonateHCID 66654511Methyl 3-bromo-5-(3,3-dimethylbut-1-yn-1-yl)thiophene-2-carboxylateHCID 666839435-Cyclohexyl-morpholin-3-one

Product 1

HCID 666846883-((R)-3-Cyclohexyl-5-oxo-morpholin-4-yl)-5-(3,3-dimethyl-but-1-ynyl)-thiophene-2-carboxylic acid methyl esterYield 63.7%

Reagents, catalysts & solvents 2

HCID 24350
Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)
Catalyst
HCID 312751,4-DioxaneSolvent

Conditions

Temperature
110 °C

Procedure

A heavy wall flask was charged with trans-cyclohexane diamine (623 mg, 5.5 mmol, 0.5 equiv), 3-bromo-5-(3,3-dimethyl-but-1-ynyl)-thiophene-2-carboxylic acid methyl ester (4.27 g, 14.2 mmol, 1.3 equiv), K2CO3 (3.02 g, 21.8 mmol, 2.0 equiv), CuI (1.04 g, 5.5 mmol, 0.5 equiv), 5-cyclohexyl-morpholin-3-one (2.0 g, 10.9 mmol, 1.0 equiv) and 1,4-dioxane (10.0 mL). The mixture was flushed with N2 and stirred at 110° C. for 48 hours. The mixture was filtered through celite and the filtrate was concentrated under vacuum. The residue was purified by silica gel, EtOAc/heptane 50% to give product 2.8 g (yield 50%).

Workup

  1. customThe mixture was flushed with N2
  2. filtrationThe mixture was filtered through celite
  3. concentrationthe filtrate was concentrated under vacuum
  4. customThe residue was purified by silica gel, EtOAc/heptane 50%

Sources & evidence

ORD record
ord-d474782ec04e441bbe8a98c2c4148c4d
Source dataset
uspto-grants-2015_05
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US09040690B2

Reaction notes

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