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Iodoethane → 6-ethyl-5,6-dihydro-1,5-dioxo-1H-pyrazolo[1,2-a][1,2,4]benzotriazine-2-carboxylic acid, ethyl ester

HRID 443496
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HRID 443496 반응식
[O:1]=[C:2]1[N:6]2[C:7]3[CH:15]=[CH:14][CH:13]=[CH:12][C:8]=3[NH:9][C:10](=[O:11])[N:5]2[CH:4]=[C:3]1[C:16]([O:18][CH2:19][CH3:20])=[O:17].C([O-])([O-])=O.[K+].[K+].[CH3:27][CH2:28]I>CN(C)C=O>[CH2:27]([N:9]1[C:8]2[CH:12]=[CH:13][CH:14]=[CH:15][C:7]=2[N:6]2[C:2](=[O:1])[C:3]([C:16]([O:18][CH2:19][CH3:20])=[O:17])=[CH:4][N:5]2[C:10]1=[O:11])[CH3:28]
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참가 물질

5

반응물 3

HCID 6340IodoethaneHCID 11430Potassium CarbonateHCID 867376765,6-dihydro-1,5-dioxo-1H-pyrazolo[1,2-a][1,2,4]benzotriazine-2-carboxylic acid, ethyl ester

생성물 1

HCID 867376796-ethyl-5,6-dihydro-1,5-dioxo-1H-pyrazolo[1,2-a][1,2,4]benzotriazine-2-carboxylic acid, ethyl ester

시약·촉매·용매 1

HCID 6228Dimethylformamide용매

실험 절차

5.22 g of 5,6-dihydro-1,5-dioxo-1H-pyrazolo[1,2-a][1,2,4]benzotriazine-2-carboxylic acid, ethyl ester made as in Example 1. 2.76 K2CO3 and 50 mM CH3CH2I are dissolved in 100 ml dimethylformamide and stirred for 20 hours. The crystalline 6-ethyl-5,6-dihydro-1,5-dioxo-1H-pyrazolo[1,2-a][1,2,4]benzotriazine-2-carboxylic acid, ethyl ester is isolated after filtration and recrystallized from dimethylformamide/ethanol. The yield is 4.7 g of white crystals having a melting point of 235°-237° C.

출처 및 근거

ORD 기록
ord-5c0b2fab5f4344c7a42332c4ebeb7be1
출처 데이터셋
uspto-grants-1981_04
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US04260751

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