HomeMCPWorkbenchSkills
HomeWorkbenchNotificationsMe
llms.txt · MCP GuidePrivacy Policy · Terms of Service · Supportv1.8.0
  1. Home
  2. /Reaction

Tert-butyl 4-(prop-2-yn-1-yl)piperidine-1-carboxylate → Tert-butyl 4-[3-(6-methoxy-3-oxo-2,3-dihydrobenzofuran-7-yl)prop-2-ynyl]piperidine-1-carboxylate

HRID 1749977
Notes
Print preview

Reaction equation

HRID 1749977 reaction equation
I[C:2]1[C:10]2[O:9][CH2:8][C:7](=[O:11])[C:6]=2[CH:5]=[CH:4][C:3]=1[O:12][CH3:13].[CH2:14]([CH:17]1[CH2:22][CH2:21][N:20]([C:23]([O:25][C:26]([CH3:29])([CH3:28])[CH3:27])=[O:24])[CH2:19][CH2:18]1)[C:15]#[CH:16]>C(N(CC)CC)C.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.[Cu]I>[CH3:13][O:12][C:3]1[CH:4]=[CH:5][C:6]2[C:7](=[O:11])[CH2:8][O:9][C:10]=2[C:2]=1[C:16]#[C:15][CH2:14][CH:17]1[CH2:22][CH2:21][N:20]([C:23]([O:25][C:26]([CH3:29])([CH3:28])[CH3:27])=[O:24])[CH2:19][CH2:18]1
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 2

HCID 18187546Tert-butyl 4-(prop-2-yn-1-yl)piperidine-1-carboxylateHCID 712788737-iodo-6-methoxybenzofuran-3(2H)-one

Product 1

HCID 71278584Tert-butyl 4-[3-(6-methoxy-3-oxo-2,3-dihydrobenzofuran-7-yl)prop-2-ynyl]piperidine-1-carboxylateYield 61%

Reagents, catalysts & solvents 3

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)Catalyst
HCID 178418476
HCID 178418476, compound
Catalyst
HCID 8471TriethylamineSolvent

Conditions

Temperature
50 °C

Procedure

A solution of 7-iodo-6-methoxybenzofuran-3(2H)-one (0.348 g, 1.20 mmol) synthesized in Example B46, Step 2 in triethylamine (10 mL) was added with tert-butyl 4-(prop-2-ynyl)piperidine-1-carboxylate (0.269 g, 1.20 mmol), dichlorobis(triphenylphosphine)palladium(II) (0.0842 g, 0.120 mmol) and copper(I) iodide (0.0114 g, 0.0600 mmol), and the mixture was stirred overnight at 50° C. The reaction mixture was concentrated, and then added with water, and the mixture was extracted with methylene chloride. The organic layer was washed with saturated brine, and dried over anhydrous magnesium sulfate. The solvent was evaporated, and the resulting residue was purified by silica gel column chromatography (hexane/ethyl acetate) to obtain tert-butyl 4-[3-(6-methoxy-3-oxo-2,3-dihydrobenzofuran-7-yl)prop-2-ynyl]piperidine-1-carboxylate (0.281 g, 61%).

Workup

  1. concentrationThe reaction mixture was concentrated
  2. additionadded with water
  3. extractionthe mixture was extracted with methylene chloride
  4. washThe organic layer was washed with saturated brine
  5. dry with materialdried over anhydrous magnesium sulfate
  6. customThe solvent was evaporated
  7. customthe resulting residue was purified by silica gel column chromatography (hexane/ethyl acetate)

Sources & evidence

ORD record
ord-96561b2d6c744209aab707b86675def2
Source dataset
uspto-grants-2015_10
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US09156827B2

Reaction notes

Loading…

On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes