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4-Nitrobenzoic Acid → Phenylmethyl(cis)-3-methyl-4-{[(4-nitrophenyl)carbonyl]oxy}-1-pyrrolidinecarboxylate

HRID 1366481
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HRID 1366481 반응식
[OH:1][C@H:2]1[C@H:6]([CH3:7])[CH2:5][N:4]([C:8]([O:10][CH2:11][C:12]2[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=2)=[O:9])[CH2:3]1.[N+:18]([C:21]1[CH:29]=[CH:28][C:24]([C:25](O)=[O:26])=[CH:23][CH:22]=1)([O-:20])=[O:19].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.CC(OC(/N=N/C(OC(C)C)=O)=O)C>C1COCC1>[CH3:7][C@H:6]1[C@@H:2]([O:1][C:25]([C:24]2[CH:23]=[CH:22][C:21]([N+:18]([O-:20])=[O:19])=[CH:29][CH:28]=2)=[O:26])[CH2:3][N:4]([C:8]([O:10][CH2:11][C:12]2[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=2)=[O:9])[CH2:5]1
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참가 물질

6

반응물 4

HCID 61084-Nitrobenzoic AcidHCID 11776TriphenylphosphineHCID 5363146Diisopropyl azodicarboxylateHCID 58277775benzyl (3S,4R)-3-hydroxy-4-methylpyrrolidine-1-carboxylate

생성물 1

HCID 86636955Phenylmethyl(cis)-3-methyl-4-{[(4-nitrophenyl)carbonyl]oxy}-1-pyrrolidinecarboxylate수율 79.6%

시약·촉매·용매 1

HCID 8028Tetrahydrofuran용매

실험 절차

To a solution of enantiopure phenylmethyl (trans)-3-hydroxy-4-methyl-1-pyrrolidinecarboxylate (E1) (1 g, 4.25 mmol) in THF (21 mL) was added 4-nitrobenzoic acid (1.42 g, 8.5 mmol), triphenylphosphine (2.23 g, 8.5 mmol) and DIAD (1.7 mL, 8.5 mmol). The resulting solution was stirred overnight. Removal of the solvent under reduced pressure yielded the crude product which was purified by RP-HPLC yielding phenylmethyl (cis)-3-methyl-4-{[(4-nitrophenyl)carbonyl]oxy}-1-pyrrolidinecarboxylate (1.30 g, 79%). LCMS: (M+H)+: 385.0 (single unknown enantiomer).

후처리

  1. customRemoval of the solvent under reduced pressure
  2. customyielded the crude product which
  3. customwas purified by RP-HPLC

출처 및 근거

ORD 기록
ord-6507dc23728845e2bb485e176e6791cc
출처 데이터셋
uspto-grants-2011_02
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US07893056B2

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