Dimethylformamide dimethyl acetal → HCID 13281184、化合物

HRID 1388371ノート

反応式

HRID 1388371 の反応式
[N:1]1([CH2:6][CH2:7][CH:8]2[CH2:13][CH2:12][NH:11][CH2:10][CH2:9]2)[CH:5]=[CH:4][N:3]=[CH:2]1.[CH3:14][O:15][CH:16]([O:20][CH3:21])N(C)C>>[CH3:14][O:15][CH:16]([O:20][CH3:21])[N:11]1[CH2:12][CH2:13][CH:8]([CH2:7][CH2:6][N:1]2[CH:5]=[CH:4][N:3]=[CH:2]2)[CH2:9][CH2:10]1

参加物

3

反応物 2

HCID 78373Dimethylformamide dimethyl acetalHCID 132811834-[2-(1H-imidazol-1-yl)ethyl]piperidine

生成物 1

HCID 13281184HCID 13281184、化合物収率 87%

実験手順

The free base 4[2-(imidazol-1-yl)ethyl]piperidine (5.1 g, 28.7 mM) and dimethylformamide dimethyl acetal (23 ml) was heated at 100° C. for 6 hours. Removal of the excess of dimethylformamide dimethyl acetal gave 4-[2-(imidazol-1-yl)ethyl]-1-piperidine carboxaldehyde dimethylacetal (6.32 g, 87%) which was dissolved in CH2Cl2 (27 ml) and added to the mixture of 6-aminopenicillanic acid (5.6 g, 258 mM) and diisopropylethylamine (3.41 ml) in CH2Cl2 (100 ml) at 0° C. The reaction was stirred at 0° C. for 1 hr. and room temperature for 3 hrs. The solvent was then removed and water (100 ml) was added. After being washed with ethylacetate, the aqueous solution, acidified to pH 3, was purified on Sephadex LH 20 columns to give [2S-(2alpha,5alpha,6-beta)]-6-[[[4 -[2-(1H-imidazol-1-yl)ethyl]-1-piperidinyl]methylene]amino]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid hydrate hydrochloride (1.8 g, 16% yield).

後処理

  1. customRemoval of the excess of dimethylformamide dimethyl acetal

出典と根拠

ORDレコード
ord-42d029bbb00c455cbddab238ced07a32
出典データセット
uspto-grants-1984_02
特許番号
US04431653

反応ノート

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