Cyclopentylamine → (S)-tert-butyl 1-(3-chloro-4-(cyclopentylcarbamoyl)phenyl)ethylcarbamate

HRID 1850161ノート

反応式

HRID 1850161 の反応式
[C:1]([O:5][C:6]([NH:8][C@H:9]([C:11]1[CH:19]=[CH:18][C:14]([C:15]([OH:17])=O)=[C:13]([Cl:20])[CH:12]=1)[CH3:10])=[O:7])([CH3:4])([CH3:3])[CH3:2].[CH:21]1([NH2:26])[CH2:25][CH2:24][CH2:23][CH2:22]1.CCN=C=NCCCN(C)C.Cl.ON1C2N=CC=CC=2N=N1.CCN(C(C)C)C(C)C>O.CN(C=O)C>[Cl:20][C:13]1[CH:12]=[C:11]([C@@H:9]([NH:8][C:6](=[O:7])[O:5][C:1]([CH3:2])([CH3:3])[CH3:4])[CH3:10])[CH:19]=[CH:18][C:14]=1[C:15](=[O:17])[NH:26][CH:21]1[CH2:25][CH2:24][CH2:23][CH2:22]1

参加物

8

反応物 5

HCID 2906CyclopentylamineHCID 81531DiisopropylethylamineHCID 181649HOAtHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 86730192(S)-4-(1-(tert-butoxycarbonylamino)ethyl)-2-chlorobenzoic acid

生成物 1

HCID 86730191(S)-tert-butyl 1-(3-chloro-4-(cyclopentylcarbamoyl)phenyl)ethylcarbamate収率 97.5%

試薬・触媒・溶媒 2

HCID 962Water溶媒HCID 6228Dimethylformamide溶媒

実験手順

To a round bottom flask with stir bar was added (S)-4-(1-(tert-butoxycarbonylamino)ethyl)-2-chlorobenzoic acid (450 mg, 1.20 mmol), cyclopentylamine (355 μL, 3.60 mmol), EDC HCl (460 mg, 2.40 mmol), 1-hydroxy-7-aza-benzotriazole (229 mg, 1.68 mmol) and DMF (6 mL). To this mixture was then added DIEA (629 μL, 3.60 mmol). Reaction mixture was allowed to stir at room temperature for 18 hours. The reaction mixture was diluted with water and extracted with EtOAc. The organic phases were combined, washed with twice with water, brine, dried (Na2SO4), filtered and concentrated to a brown crystalline of (S)-tert-butyl 1-(3-chloro-4-(cyclopentylcarbamoyl)phenyl)ethylcarbamate (476 mg, 1.17 mmol, 97% yield). LCMS m/z 367.0 (M+H)+, Rt 0.90 min.

後処理

  1. customReaction mixture
  2. stirringto stir at room temperature for 18 hours
  3. extractionextracted with EtOAc
  4. washwashed with twice with water, brine
  5. dry with materialdried (Na2SO4)
  6. filtrationfiltered

出典と根拠

ORDレコード
ord-7cfb764d8c09464c9ff7a5e7f94d5785
出典データセット
uspto-grants-2015_02
特許番号
US08957068B2

反応ノート

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