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Triethylamine → 3-(4-fluorophenyl)-5-(2-phenylethynyl)-1-(tetrahydropyran-2-yl)-1H-indazole

HRID 1272781
Notes
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Reaction equation

HRID 1272781 reaction equation
Br[C:2]1[CH:3]=[C:4]2[C:8](=[CH:9][CH:10]=1)[N:7]([CH:11]1[CH2:16][CH2:15][CH2:14][CH2:13][O:12]1)[N:6]=[C:5]2[C:17]1[CH:22]=[CH:21][C:20]([F:23])=[CH:19][CH:18]=1.C(N(CC)CC)C.C1(C)C=CC=CC=1P(C1C=CC=CC=1C)C1C=CC=CC=1C.[C:53]1([C:59]#[CH:60])[CH:58]=[CH:57][CH:56]=[CH:55][CH:54]=1>C(#N)C>[F:23][C:20]1[CH:21]=[CH:22][C:17]([C:5]2[C:4]3[C:8](=[CH:9][CH:10]=[C:2]([C:60]#[C:59][C:53]4[CH:58]=[CH:57][CH:56]=[CH:55][CH:54]=4)[CH:3]=3)[N:7]([CH:11]3[CH2:16][CH2:15][CH2:14][CH2:13][O:12]3)[N:6]=2)=[CH:18][CH:19]=1
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 4

HCID 8471TriethylamineHCID 10821PhenylacetyleneHCID 80271Tri-o-tolylphosphineHCID 224796801h-Indazole,5-bromo-3-(4-fluorophenyl)-1-(tetrahydro-2h-pyran-2-yl)-

Product 1

HCID 224802083-(4-fluorophenyl)-5-(2-phenylethynyl)-1-(tetrahydropyran-2-yl)-1H-indazoleYield 32%

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Procedure

A mixture of 5-bromo-3-(4-fluorophenyl)-1-(tetrahydropyran-2-yl)-1H-indazole (0.375 g, 1.0 mmol), triethylamine (1.5 mL), tri-o-tolylphosphine (0.122 g, 0.4 mmol), tri(dibenzylideneacetone)dipalladium(0) (0.092 g, 0.1 mmol) and phenylacetylene (0.204 g, 2.0 mmol) in dried acetonitrile (10 mL) under nitrogen was heated to reflux overnight. It was quenched with water and extracted with ethyl acetate. The extracts were dried over magnesium sulfate, filtered, and concentrated. The residue was then purified by chromatography (SiO2, 10–15% ethyl acetate/hexane) to provide the title compound (0.127 g, 32% yield). 1H NMR (CDCl3) δ 8.16 (t, 1H), 7.93–7.97 (m, 2H), 7.54–7.64 (m, 4H), 7.34–7.37 (m, 3H), 7.21 (t, 2H) 5.77 (dd, 1H), 4.08 (m, 1H), 3.79 (m, 1H), 2.62 (m, 1H), 2.11–2.21 (m, 2H), 1.57–1.83 (m, 3H); ES-MS (m/z) 397 [M+1]+.

Workup

  1. temperaturewas heated
  2. temperatureto reflux overnight
  3. customIt was quenched with water
  4. extractionextracted with ethyl acetate
  5. dry with materialThe extracts were dried over magnesium sulfate
  6. filtrationfiltered
  7. concentrationconcentrated
  8. customThe residue was then purified by chromatography (SiO2, 10–15% ethyl acetate/hexane)

Sources & evidence

ORD record
ord-fe4074f4d8614714ac216d1499c32b4b
Source dataset
uspto-grants-2007_04
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US07208513B2

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes