2-Aminoadamantane hydrochloride → 1-tert-butyl-5-chloro-1H-pyrazole-4-carboxylic acid adamantan-2-ylamide

HRID 12857

반응식

HRID 12857 반응식
[C:1]([N:5]1[C:9]([Cl:10])=[C:8]([C:11]([OH:13])=O)[CH:7]=[N:6]1)([CH3:4])([CH3:3])[CH3:2].CCN(C(C)C)C(C)C.[B-](F)(F)(F)F.CN(C(ON1C(=O)CCC1=O)=[N+](C)C)C.Cl.[NH2:44][CH:45]1[CH:52]2[CH2:53][CH:48]3[CH2:49][CH:50]([CH2:54][CH:46]1[CH2:47]3)[CH2:51]2>ClCCl.CN(C=O)C.O>[CH:46]12[CH2:54][CH:50]3[CH2:49][CH:48]([CH2:53][CH:52]([CH2:51]3)[CH:45]1[NH:44][C:11]([C:8]1[CH:7]=[N:6][N:5]([C:1]([CH3:2])([CH3:3])[CH3:4])[C:9]=1[Cl:10])=[O:13])[CH2:47]2

참가 물질

8

반응물 4

HCID 253312-Aminoadamantane hydrochlorideHCID 81531DiisopropylethylamineHCID 98575222-(2,5-Dioxopyrrolidin-1-yl)-1,1,3,3-tetramethylisouronium tetrafluoroborateHCID 534235531-(tert-Butyl)-5-chloro-1H-pyrazole-4-carboxylic acid2회

생성물 1

HCID 250144171-tert-butyl-5-chloro-1H-pyrazole-4-carboxylic acid adamantan-2-ylamide수율 83%

시약·촉매·용매 3

HCID 962Water용매HCID 6228Dimethylformamide용매HCID 6344Dichloromethane용매

실험 절차

tert-Butyl-5-chloro-1H-pyrazole-4-carboxylic acid (Intermediate 9, 0.5 g, 2.47 mmol) was dissolved in a mixture of dry dichloromethane (12 mL) and dry DMF (3 mL). DIPEA (2.6 mL, 14.9 mmol) and TSTU (0.9 g, 2.7 mmol) were added to the above mixture. After the mixture was stirred for 1 h, the appearance of active ester was detected by LC-MS. Then 2-aminoadamantane hydrochloride (0.44 g, 2.34 mmol) was added. After another 2 hours water was added and the organic layer was separated. The aqueous layer was extracted twice with dichloromethane. The combined organic phases were dried under vacuum and purified by C-18 reverse phase preparative-HPLC with a gradient of 10-100% acetonitrile/water to give 1-tert-butyl-5-chloro-1H-pyrazole-4-carboxylic acid adamantan-2-ylamide (650 mg, 83%). Mass spectrum: m/z: 336.2 (M+1).

후처리

  1. customthe organic layer was separated
  2. extractionThe aqueous layer was extracted twice with dichloromethane
  3. customThe combined organic phases were dried under vacuum
  4. custompurified by C-18 reverse phase preparative-HPLC with a gradient of 10-100% acetonitrile/water

출처 및 근거

ORD 기록
ord-1e5a5975997648e3a2015a610cf55dc5
출처 데이터셋
uspto-grants-2010_06
특허 번호
US07728029B2

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