Diisopropylethylamine → (s)-Tert-butyl 2-(2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenylcarbamoyl)pyrrolidine-1-carboxylate

HRID 75088

반응식

HRID 75088 반응식
[NH2:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[B:8]1[O:16][C:13]([CH3:15])([CH3:14])[C:10]([CH3:12])([CH3:11])[O:9]1.[C:17]([N:24]1[CH2:31][CH2:30][CH2:29][C@H:25]1[C:26](O)=[O:27])([O:19][C:20]([CH3:23])([CH3:22])[CH3:21])=[O:18].Cl.CN(C)CCCN=C=NCC.C(N(CC)C(C)C)(C)C>CN(C)C=O>[CH3:12][C:10]1([CH3:11])[C:13]([CH3:15])([CH3:14])[O:16][B:8]([C:3]2[CH:4]=[CH:5][CH:6]=[CH:7][C:2]=2[NH:1][C:26]([C@@H:25]2[CH2:29][CH2:30][CH2:31][N:24]2[C:17]([O:19][C:20]([CH3:23])([CH3:22])[CH3:21])=[O:18])=[O:27])[O:9]1

참가 물질

6

반응물 4

HCID 81531DiisopropylethylamineHCID 850831,2-Pyrrolidinedicarboxylic acid, 1-(1,1-dimethylethyl) ester, (2S)-HCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 27346522-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)aniline

생성물 1

HCID 66982669(s)-Tert-butyl 2-(2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenylcarbamoyl)pyrrolidine-1-carboxylate

시약·촉매·용매 1

HCID 6228Dimethylformamide용매

반응 조건

온도
60 °C

실험 절차

To 2-aminophenylboronic acid pinacol ester a (3.0 g, 0.014 mol) and N-Boc-L-proline b (3.0 g, 0.014 mol) in N,N-dimethylformamide (15 mL) was added N-(3-dimethylaminopropyl)-N′-ethylcarbodiimide hydrochloride (2.6 g, 0.014 mol), 1-hydrozybenzotriazole (1.9 g, 0.014 mol), and then N,N-diisopropylethylamine (2.4 mL, 0.014 mol). The reaction was heated to 60° C., stirred several days, cooled to room temperature, and then quenched by the addition of a saturated aqueous solution of sodium bicarbonate. The aqueous layer was extracted with EtOAc and the combined organic layers were dried over MgSO4, filtered, and concentrated. The crude residue was purified by ISCO chromatography (80 g column, 0 to 80% EtOAc/Hexanes) to give (S)-tert-butyl 2-(2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenylcarbamoyl)pyrrolidine-1-carboxylate c (2.87 g, 49%).

후처리

  1. temperaturecooled to room temperature
  2. customquenched by the addition of a saturated aqueous solution of sodium bicarbonate
  3. extractionThe aqueous layer was extracted with EtOAc
  4. dry with materialthe combined organic layers were dried over MgSO4
  5. filtrationfiltered
  6. concentrationconcentrated
  7. customThe crude residue was purified by ISCO chromatography (80 g column, 0 to 80% EtOAc/Hexanes)

출처 및 근거

ORD 기록
ord-714b6f05ea764ba7911f350ae3155c03
출처 데이터셋
uspto-grants-2014_09
특허 번호
US08835393B2

연결된 노트

불러오는 중…