Ethyl Acetate → 5-[4-(6,6-Dimethyl-5,6,7,8-tetrahydroquinazolin-4-yl)-2,3,4,5-tetrahydro-1,4-benzoxazepin-7-yl]-3-nitropyridin-2-amine

HRID 241225ノート

反応式

HRID 241225 の反応式
Cl.Cl.[N+:3]([C:6]1[C:7]([NH2:23])=[N:8][CH:9]=[C:10]([C:12]2[CH:13]=[CH:14][C:15]3[O:21][CH2:20][CH2:19][NH:18][CH2:17][C:16]=3[CH:22]=2)[CH:11]=1)([O-:5])=[O:4].Cl[C:25]1[C:34]2[CH2:33][C:32]([CH3:36])([CH3:35])[CH2:31][CH2:30][C:29]=2[N:28]=[CH:27][N:26]=1.C(N(C(C)C)CC)(C)C.C(OCC)(=O)C>CN1CCCC1=O>[CH3:35][C:32]1([CH3:36])[CH2:31][CH2:30][C:29]2[N:28]=[CH:27][N:26]=[C:25]([N:18]3[CH2:17][C:16]4[CH:22]=[C:12]([C:10]5[CH:11]=[C:6]([N+:3]([O-:5])=[O:4])[C:7]([NH2:23])=[N:8][CH:9]=5)[CH:13]=[CH:14][C:15]=4[O:21][CH2:20][CH2:19]3)[C:34]=2[CH2:33]1

参加物

6

反応物 4

HCID 8857Ethyl AcetateHCID 81531DiisopropylethylamineHCID 668206213-Nitro-5-(2,3,4,5-tetrahydro-1,4-benzoxazepin-7-yl)pyridin-2-amine dihydrochlorideHCID 866478114-Chloro-6,6-dimethyl-5,6,7,8-tetrahydroquinazoline

生成物 1

HCID 668203605-[4-(6,6-Dimethyl-5,6,7,8-tetrahydroquinazolin-4-yl)-2,3,4,5-tetrahydro-1,4-benzoxazepin-7-yl]-3-nitropyridin-2-amine収率 81.7%

試薬・触媒・溶媒 1

HCID 13387N-methyl-2-pyrrolidone溶媒

実験手順

A solution of 3-nitro-5-(2,3,4,5-tetrahydro-1,4-benzoxazepin-7-yl)pyridin-2-amine dihydrochloride (540 mg, 1.50 mmol), 4-chloro-6,6-dimethyl-5,6,7,8-tetrahydroquinazoline (270 mg, 1.37 mmol, reagent preparation 3), and diisopropylethylamine (970 mg, 7.49 mmol) in N-methylpyrrolidinone (3 mL) was stirred at 120° C. for 18 h. After cooling to room temperature ethyl acetate (100 mL) was added, the formed precipitate was filtered off, the organic filtrate was washed with saturated sodium bicarbonate (50 mL), water (2×50 mL), and brine (50 mL), dried over sodium sulfate, filtered and concentrated to afford crude 5-[4-(6,6-dimethyl-5,6,7,8-tetrahydroquinazolin-4-yl)-2,3,4,5-tetrahydro-1,4-benzoxazepin-7-yl]-3-nitropyridine-2-amine (0.5 g) as a brown solid which was used in the next step without further purification. MS (EI) for C24H26N6O3: 447 (MH+).

後処理

  1. additionwas added
  2. filtrationthe formed precipitate was filtered off
  3. washthe organic filtrate was washed with saturated sodium bicarbonate (50 mL), water (2×50 mL), and brine (50 mL)
  4. dry with materialdried over sodium sulfate
  5. filtrationfiltered
  6. concentrationconcentrated

出典と根拠

ORDレコード
ord-63be500c902b4c31a6552d488e01ab8f
出典データセット
uspto-grants-2014_02
特許番号
US08648066B2

反応ノート

読み込み中…