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1,2-Dichloroethane → ethyl 1-[(R)-2-tert-butoxycarbonylamino-3-(4-methoxyphenyl)propionyl]-4-cyclohexylpiperidine-4-carboxylate

HRID 333445
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HRID 333445 반응식
[C:1]([O:5][C:6]([NH:8][C@H:9]([CH2:13][C:14]1[CH:19]=[CH:18][C:17]([O:20][CH3:21])=[CH:16][CH:15]=1)[C:10]([OH:12])=O)=[O:7])([CH3:4])([CH3:3])[CH3:2].C(Cl)CCl.C1C=CC2N(O)N=NC=2C=1.[CH:36]1([C:42]2([C:48]([O:50][CH2:51][CH3:52])=[O:49])[CH2:47][CH2:46][NH:45][CH2:44][CH2:43]2)[CH2:41][CH2:40][CH2:39][CH2:38][CH2:37]1.C(N(CC)CC)C.[OH-].[Na+]>CN(C=O)C>[C:1]([O:5][C:6]([NH:8][C@H:9]([CH2:13][C:14]1[CH:19]=[CH:18][C:17]([O:20][CH3:21])=[CH:16][CH:15]=1)[C:10]([N:45]1[CH2:46][CH2:47][C:42]([CH:36]2[CH2:41][CH2:40][CH2:39][CH2:38][CH2:37]2)([C:48]([O:50][CH2:51][CH3:52])=[O:49])[CH2:43][CH2:44]1)=[O:12])=[O:7])([CH3:2])([CH3:3])[CH3:4]
참가 물질실험 절차후처리출처 및 근거반응 노트

참가 물질

8

반응물 6

HCID 111,2-DichloroethaneHCID 8471TriethylamineHCID 14798Sodium HydroxideHCID 757711-HydroxybenzotriazoleHCID 7017908Boc-O-methyl-D-tyrosineHCID 18418945Ethyl 4-cyclohexyl-4-piperidinecarboxylate

생성물 1

HCID 66987792
ethyl 1-[(R)-2-tert-butoxycarbonylamino-3-(4-methoxyphenyl)propionyl]-4-cyclohexylpiperidine-4-carboxylate
수율 66%

시약·촉매·용매 1

HCID 6228Dimethylformamide용매

실험 절차

To 3.22 g (10.9 mmol) of (R)-2-tert-butoxycarbonylamino-3-(4-methoxyphenyl)-propionic acid dissolved in 20 mL of DMF are added 2.29 g (12.0 mmol) of EDC, 1.62 g (12.0 mmol) of HOBt, 2.62 g (10.9 mmol) of ethyl 4-cyclohexylpiperidine-4-carboxylate (cf. preparation 3-1-2) and 4.6 mL (32.7 mmol) of triethylamine. After stirring for 2 hours 30 minutes, the reaction is stopped by adding aqueous 1N sodium hydroxide solution and the organic products are extracted with dichloromethane. The organic phase is dried over MgSO4, filtered and evaporated. The crude product obtained is chromatographed on silica gel (eluent: 7/3 heptane/EtOAc). 3.70 g of ethyl 1-[(R)-2-tert-butoxycarbonylamino-3-(4-methoxyphenyl)propionyl]-4-cyclohexyl-piperidine-4-carboxylate in the form of a white powder are obtained in a yield of 66%.

후처리

  1. extractionthe organic products are extracted with dichloromethane
  2. dry with materialThe organic phase is dried over MgSO4
  3. filtrationfiltered
  4. customevaporated
  5. customThe crude product obtained
  6. customis chromatographed on silica gel (eluent: 7/3 heptane/EtOAc)

출처 및 근거

ORD 기록
ord-5d363eeaa04142e29dc00e35def5544e
출처 데이터셋
uspto-grants-2014_11
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US08877968B2

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