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Methyl isocyanoacetate → 5-[6-(N-benzyloxycarbonylamino)hex-1-en-2-yl]-oxazoline-4-carboxylic acid methyl ester

HRID 376108
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HRID 376108 반응식
[CH2:1]([O:8][C:9]([NH:11][CH2:12][CH2:13][CH2:14][CH2:15][C:16](=[CH2:19])[CH:17]=[O:18])=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[CH3:20][O:21][C:22](=[O:26])[CH2:23][N+:24]#[C-:25]>C1(C)C=CC=CC=1.[Cu-]=O>[CH3:20][O:21][C:22]([CH:23]1[CH:17]([C:16]([CH2:15][CH2:14][CH2:13][CH2:12][NH:11][C:9]([O:8][CH2:1][C:2]2[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=2)=[O:10])=[CH2:19])[O:18][CH:25]=[N:24]1)=[O:26]
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참가 물질

5

반응물 2

HCID 547815Methyl isocyanoacetateHCID 189915056-(N-benzyloxycarbonylamino)-2-methylene-hexanal

생성물 1

HCID 539989335-[6-(N-benzyloxycarbonylamino)hex-1-en-2-yl]-oxazoline-4-carboxylic acid methyl ester

시약·촉매·용매 2

HCID 178419072HCID 178419072, 화합물촉매HCID 1140Toluene용매2회

실험 절차

4.0 g (15.3 mmol) of 6-(N-benzyloxycarbonylamino)-2-methylene-hexanal and 1.62 ml (16.8 mmol) of isocyanoacetic acid methyl ester are dissolved in 50 ml of toluene and added dropwise at 40° to a suspension of 0.12 g of 96.4% copper(I) oxide in 50 ml of toluene. The mixture is then stirred at room temperature for 2.5 hours, filtered, introduced into a column filled with 60 g of silica gel and extracted first with hexane/ethyl acetate (1:1) and then with ethyl acetate. 5-[6-(N-benzyloxycarbonylamino)hex-1-en-2-yl]-oxazoline-4-carboxylic acid methyl ester is obtained; oil.

후처리

  1. filtrationfiltered
  2. additionintroduced into a column
  3. additionfilled with 60 g of silica gel
  4. extractionextracted first with hexane/ethyl acetate (1:1)

출처 및 근거

ORD 기록
ord-fdc932897fc44aa6a203f8b46f65ae16
출처 데이터셋
uspto-grants-1996_01
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US05488140

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