Cyanogen Bromide → (S)-tert-butyl 5-[(3,5-bistrifluoromethylbenzyl)cyanoamino]-7-methyl-8-trifluoromethyl-2,3,4,5-tetrahydrobenzo[b]azepine-1-carboxylate

HRID 507033ノート

反応式

HRID 507033 の反応式
[N:1]#[C:2]Br.[F:4][C:5]([F:42])([F:41])[C:6]1[CH:7]=[C:8]([CH:34]=[C:35]([C:37]([F:40])([F:39])[F:38])[CH:36]=1)[CH2:9][NH:10][C@H:11]1[CH2:17][CH2:16][CH2:15][N:14]([C:18]([O:20][C:21]([CH3:24])([CH3:23])[CH3:22])=[O:19])[C:13]2[CH:25]=[C:26]([C:30]([F:33])([F:32])[F:31])[C:27]([CH3:29])=[CH:28][C:12]1=2.C(N(C(C)C)CC)(C)C>O1CCCC1>[F:42][C:5]([F:4])([F:41])[C:6]1[CH:7]=[C:8]([CH:34]=[C:35]([C:37]([F:39])([F:38])[F:40])[CH:36]=1)[CH2:9][N:10]([C:2]#[N:1])[C@H:11]1[CH2:17][CH2:16][CH2:15][N:14]([C:18]([O:20][C:21]([CH3:23])([CH3:22])[CH3:24])=[O:19])[C:13]2[CH:25]=[C:26]([C:30]([F:33])([F:31])[F:32])[C:27]([CH3:29])=[CH:28][C:12]1=2

参加物

5

反応物 3

HCID 10476Cyanogen BromideHCID 81531DiisopropylethylamineHCID 59432291(S)-tert-butyl 5-(3,5-bistrifluoromethylbenzylamino)-7-methyl-8-trifluoromethyl-2,3,4,5-tetrahydrobenzo[b]azepine-1-carboxylate

生成物 1

HCID 59432409(S)-tert-butyl 5-[(3,5-bistrifluoromethylbenzyl)cyanoamino]-7-methyl-8-trifluoromethyl-2,3,4,5-tetrahydrobenzo[b]azepine-1-carboxylate収率 99%

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒

反応条件

温度
50 °C

実験手順

Add cyanogen bromide (1.21 mL, 6.04 mmol, 5 M solution in acetonitrile) to a solution of (S)-tert-butyl 5-(3,5-bistrifluoromethylbenzylamino)-7-methyl-8-trifluoromethyl-2,3,4,5-tetrahydrobenzo[b]azepine-1-carboxylate (2.30 g, 4.03 mmol) and diisopropylethylamine (1.05 mL, 6.04 mmol) in tetrahydrofuran (50 mL) at room temperature under nitrogen and heat the mixture at 50° C. for 12 h. Add silica gel to the cooled mixture and remove the solvents under reduced pressure. Purify the residue by column chromatography on silica gel, eluting with ethyl acetate/hexanes (2:3), to provide the title compound as a colorless oil (2.10 g, >99%), which is used in the next step without further purification: APCI MS m/z 496 (M+H−Boc)+.

後処理

  1. customAdd silica gel to the cooled mixture and remove the solvents under reduced pressure
  2. customPurify the residue by column chromatography on silica gel
  3. washeluting with ethyl acetate/hexanes (2:3)

出典と根拠

ORDレコード
ord-3efcb9e45beb4338835b4fcd565dfc8d
出典データセット
uspto-grants-2010_08
特許番号
US07786108B2

反応ノート

読み込み中…