Nicotinic Acid → 4-Formyl-2-methoxyphenyl pyridine-3-carboxylate

HRID 44447

反応式

HRID 44447 の反応式
[CH:1]1[CH:6]=[N:5][CH:4]=[C:3]([C:7]([OH:9])=[O:8])[CH:2]=1.[O:10]=[CH:11][C:12]1[CH:20]=[CH:19][C:17](O)=[C:14]([O:15][CH3:16])[CH:13]=1.CN1CCOCC1.CCN=C=NCCCN(C)C.Cl>ClCCl.O>[CH:11]([C:12]1[CH:20]=[CH:19][C:17]([O:8][C:7](=[O:9])[C:3]2[CH:2]=[CH:1][CH:6]=[N:5][CH:4]=2)=[C:14]([O:15][CH3:16])[CH:13]=1)=[O:10]

参加物

7

反応物 4

HCID 938Nicotinic AcidHCID 1183VanillinHCID 79724-MethylmorpholineHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochloride

生成物 1

HCID 8897804-Formyl-2-methoxyphenyl pyridine-3-carboxylate

試薬・触媒・溶媒 2

HCID 962Water溶媒HCID 6344Dichloromethane溶媒

実験手順

To a solution of Niacin 1 (1.6 g, 13.1 mmol) in dichloromethane (10 mL) was added Vanillin 8 (2 g, 13.1 mmol), N-methyl morpholine (4.3 mL, 39 mmol) and EDCI.HCl (5 g, 26.2 mmol). The resulting mixture was stirred at ambient temp for 3 h. It was then diluted with water, extracted with dichloromethane, and the organic layer dried over anhydrous sodium sulfate and concentrated. The crude product thus obtained was then chromatographed using over a column of silica gel using petroleum ether:ethyl acetate (1:1) to afford the title compound as a off white solid (300 mg, 9%, mp (° C.): 92-94) 1H NMR (300 MHz, DMSO-D6): 10.02 (s, 1H), 9.25 (d, J=2 Hz, 1H), 8.93 (dd, J=5 & 1.5 Hz, 1H), 8.48 (dt, J=1.8 Hz & 8 Hz, 1H), 7.67 (m, 3H), 7.57 (d, J=8 Hz, 1H), 3.87 (s, 3H)); LCMS (m/z): 257.7 (M+1); HPLC: tRet: 6.486 (98.9%).

後処理

  1. extractionextracted with dichloromethane
  2. dry with materialthe organic layer dried over anhydrous sodium sulfate
  3. concentrationconcentrated
  4. customThe crude product thus obtained
  5. customwas then chromatographed

出典と根拠

ORDレコード
ord-27a5bf611e6f4369a2f8f23bcfff16de
出典データセット
uspto-grants-2013_09
特許番号
US08541435B2

関連ノート

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