6-Bromopyridine-2-carbaldehyde → tert-Butyl {[1-(6-formylpyridin-2-yl)-2-naphthyl]methyl}phenylcarbamate

HRID 2370666ノート

反応式

HRID 2370666 の反応式
Br[C:2]1[N:7]=[C:6]([CH:8]=[O:9])[CH:5]=[CH:4][CH:3]=1.[C:10]1([N:16]([CH2:24][C:25]2[CH:34]=[CH:33][C:32]3[C:27](=[CH:28][CH:29]=[CH:30][CH:31]=3)[C:26]=2B2OC(C)(C)C(C)(C)O2)[C:17](=[O:23])[O:18][C:19]([CH3:22])([CH3:21])[CH3:20])[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=1>CO.O.C1(C)C=CC=CC=1.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[CH:8]([C:6]1[N:7]=[C:2]([C:26]2[C:27]3[C:32](=[CH:31][CH:30]=[CH:29][CH:28]=3)[CH:33]=[CH:34][C:25]=2[CH2:24][N:16]([C:10]2[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=2)[C:17](=[O:23])[O:18][C:19]([CH3:22])([CH3:20])[CH3:21])[CH:3]=[CH:4][CH:5]=1)=[O:9]

参加物

7

反応物 2

HCID 27570096-Bromopyridine-2-carbaldehydeHCID 66796055tert-Butyl phenyl{[1-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2-naphthyl]methyl}carbamate

生成物 1

HCID 86660102tert-Butyl {[1-(6-formylpyridin-2-yl)-2-naphthyl]methyl}phenylcarbamate

試薬・触媒・溶媒 4

HCID 178418397HCID 178418397、化合物触媒HCID 887Methanol溶媒HCID 962Water溶媒HCID 1140Toluene溶媒

実験手順

A solution of 24.3 g (84.8 mmol) of Na2CO3(H2O)10 in a mixture of 120 ml of methanol and 450 ml of water was added to a mixture of 6.30 g (33.9 mmol) of 6-bromopyridine-2-carbaldehyde, 15.6 g (33.9 mmol) of tert-butyl phenyl{[1-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2-naphthyl]methyl}carbamate and 1.96 g (1.70 mmol) of Pd(PPh3)4 in 600 ml of toluene by vigorous stirring at room temperature. The resulting mixture was stirred at 80° C. for 12 h. Thereafter, this mixture was cooled to room temperature, the organic layer was separated, dried over MgSO4, and then evaporated to dryness. The product was isolated by flash chromatography on silica gel 60 (40-63 um; eluent: hexanes-ethyl acetate=50:1 and then 10:1, vol.). Yield 9.50 g (64%). Anal. calc. for C28H26N2O3: C, 76.69; H, 5.98; N, 6.39. Found: C, 76.87; H, 6.12; N, 6.25. 1H NMR (CDCl3): 10.03 (s, 1H, CHO), 7.94-7.98 (m, 2H, 3,5-H in Py), 7.88 (m, 1H, 8-H in naphthyl), 7.83 (m, 1H, 4-H in Py), 7.75 (d, J=8.6 Hz, 1H, 4-H in naphthyl), 7.45 (m, 1H, 7-H in naphthyl), 7.34 (m, 1H, 6-H in naphthyl), 7.11-7.18 (m, 4H, 5-H in naphthyl and 3,4,5-H in Ph), 7.03 (d, J=8.6 Hz, 1H, 3-H in naphthyl), 6.93 (m, 2H, 2,6-H in Ph), 5.06 (d, J=15.9 Hz, 1H, CHH′N), 4.52 (d, J=15.9 Hz, 1H, CHH′N), 1.40 (s, 9H, tBu).

後処理

  1. stirringThe resulting mixture was stirred at 80° C. for 12 h
  2. temperatureThereafter, this mixture was cooled to room temperature
  3. customthe organic layer was separated
  4. dry with materialdried over MgSO4
  5. customevaporated to dryness
  6. customThe product was isolated by flash chromatography on silica gel 60 (40-63 um

出典と根拠

ORDレコード
ord-9a485591168644ca9d8b9197eea8149e
出典データセット
uspto-grants-2014_04
特許番号
US08710163B2

反応ノート

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