Diisopropylethylamine → 2-Chloro-5-((2-chlorophenyl)ethynyl)isonicotinaldehyde

HRID 468849ノート

反応式

HRID 468849 の反応式
Br[C:2]1[C:7]([CH:8]=[O:9])=[CH:6][C:5]([Cl:10])=[N:4][CH:3]=1.[Cl:11][C:12]1[CH:17]=[CH:16][CH:15]=[CH:14][C:13]=1[C:18]#[CH:19].C(N(CC)C(C)C)(C)C>O1CCOCC1.C(OCC)(=O)C.[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>[Cl:10][C:5]1[CH:6]=[C:7]([C:2]([C:19]#[C:18][C:13]2[CH:14]=[CH:15][CH:16]=[CH:17][C:12]=2[Cl:11])=[CH:3][N:4]=1)[CH:8]=[O:9]

参加物

8

反応物 3

HCID 81531DiisopropylethylamineHCID 5859951-Chloro-2-ethynylbenzeneHCID 534183815-Bromo-2-chloropyridine-4-carbaldehyde

生成物 1

HCID 866749492-Chloro-5-((2-chlorophenyl)ethynyl)isonicotinaldehyde収率 88.5%

試薬・触媒・溶媒 4

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)触媒HCID 178418476HCID 178418476、化合物触媒HCID 8857Ethyl Acetate溶媒HCID 312751,4-Dioxane溶媒

反応条件

温度
50 °C

実験手順

A mixture of 5-bromo-2-chloroisonicotinaldehyde (1.0 g, 4.5 mmol), 1-chloro-2-ethynylbenzene (650 mg, 4.7 mmol), N,N-diisopropylethylamine (1.6 mL, 9.1 mmol), copper(I) iodide (43 mg, 0.23 mmol), and bis(triphenylphosphine)palladium(II) chloride (159 mg, 0.23 mmol) in 1,4-dioxane (21 mL) was heated at 50° C. for 1 hour. The cooled reaction mixture was diluted with ethyl acetate (100 mL) and washed with water (100 mL). The organic layer was separated, dried over sodium sulfate, filtered, and evaporated in vacuo to afford a residue that was purified by flash chromatography (silica, 40 g, ISCO, 0-30% ethyl acetate in heptane) to afford the title compound as an off-white solid (1.1 g, 88%). 1H NMR (400 MHz, CDCl3) δ 10.64 (s, 1H), 8.77 (s, 1H), 7.77 (s, 1H), 7.62 (dd, J=7.5, 1.7 Hz, 1H), 7.49 (d, J=7.9 Hz, 1H), 7.38 (td, J=7.8, 1.8 Hz, 1H), 7.32 (td, J=7.5, 1.2 Hz, 1H).

後処理

  1. customThe cooled reaction mixture
  2. washwashed with water (100 mL)
  3. customThe organic layer was separated
  4. dry with materialdried over sodium sulfate
  5. filtrationfiltered
  6. customevaporated in vacuo
  7. customto afford a residue that
  8. customwas purified by flash chromatography (silica, 40 g, ISCO, 0-30% ethyl acetate in heptane)

出典と根拠

ORDレコード
ord-eca51bf2c1d54d6a888d420eb2f326c1
出典データセット
uspto-grants-2014_01
特許番号
US08623889B2

反応ノート

読み込み中…