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Diethyl Ether → [4-(6,6-Dimethyl-5,6,7,8-tetrahydroquinazolin-4-yl)-2,3,4,5-tetrahydro-1,4-benzoxazepin-7-yl]boronic acid

HRID 241040
ノート
印刷プレビュー

反応式

HRID 241040 の反応式
Cl.[O:2]1[C:8]2[CH:9]=[CH:10][C:11]([B:13]([OH:15])[OH:14])=[CH:12][C:7]=2[CH2:6][NH:5][CH2:4][CH2:3]1.Cl[C:17]1[C:26]2[CH2:25][C:24]([CH3:28])([CH3:27])[CH2:23][CH2:22][C:21]=2[N:20]=[CH:19][N:18]=1.CCN(C(C)C)C(C)C.C(OCC)C>O1CCOCC1.O>[CH3:27][C:24]1([CH3:28])[CH2:23][CH2:22][C:21]2[N:20]=[CH:19][N:18]=[C:17]([N:5]3[CH2:6][C:7]4[CH:12]=[C:11]([B:13]([OH:15])[OH:14])[CH:10]=[CH:9][C:8]=4[O:2][CH2:3][CH2:4]3)[C:26]=2[CH2:25]1
参加物反応条件実験手順後処理出典と根拠反応ノート

参加物

7

反応物 4

HCID 3283Diethyl EtherHCID 81531DiisopropylethylamineHCID 66820605(2,3,4,5-Tetrahydrobenzo[f][1,4]oxazepin-7-yl)boronic acid hydrochlorideHCID 866478114-Chloro-6,6-dimethyl-5,6,7,8-tetrahydroquinazoline

生成物 1

HCID 66820411[4-(6,6-Dimethyl-5,6,7,8-tetrahydroquinazolin-4-yl)-2,3,4,5-tetrahydro-1,4-benzoxazepin-7-yl]boronic acid収率 80%

試薬・触媒・溶媒

2
HCID 962Water溶媒HCID 312751,4-Dioxane溶媒

反応条件

温度
90 °C

実験手順

To a slurry of 2,3,4,5-tetrahydro-1,4-benzoxazepin-7-ylboronic acid hydrochloride salt (5.7 g, 25 mmol) (example 8, step 1) and 4-chloro-6,6-dimethyl-5,6,7,8-tetrahydroquinazoline (reagent preparation 3) (3.0 g, 15 mmol) in dioxane (75 mL) and H2O (75 mL) was added DIPEA (17 mL, 100 mmol) and the resulting mixture was heated (90° C.). After 72 hours the solution was concentrated and partitioned between 2M aqueous sodium hydroxide and ethyl ether. The aqueous layer was neutralized and extracted with chloroform. The organic layer was washed with brine, dried over magnesium sulfate, filtered and concentrated in vacuo. Trituration with ethyl ether provided [4-(6,6-dimethyl-5,6,7,8-tetrahydroquinazolin-4-yl)-2,3,4,5-tetrahydro-1,4-benzoxazepin-7-yl]boronic acid (4.2 g, 80% yield) as a white solid. 1H NMR (400 MHz, d6-DMSO) δ 8.68 (s, 1H), 7.77 (s, 1H), 7.64 (dd, 1H), 6.86 (dd, 1H), 5.04 (s, 2H), 4.46 (m, 2H), 4.18 (m, 2H), 2.80 (t, 2H), 2.52 (s, 2H), 1.58 (t, 2H), 0.86 (s, 6H); MS (ES) for C19H24BN3O3: 354 (MH+).

後処理

  1. concentrationAfter 72 hours the solution was concentrated
  2. custompartitioned between 2M aqueous sodium hydroxide and ethyl ether
  3. extractionextracted with chloroform
  4. washThe organic layer was washed with brine
  5. dry with materialdried over magnesium sulfate
  6. filtrationfiltered
  7. concentrationconcentrated in vacuo

出典と根拠

ORDレコード
ord-f00c26ca92ac417e8ef6eeca02513cbc
出典データセット
uspto-grants-2014_02
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US08648066B2

反応ノート

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