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Diisopropylethylamine → 3-methyl-6-[4-(tetrahydropyran-2-yloxy)butyl]-5,6,7,8-tetrahydro-1H-pyrido[4,3-d]pyrimidine-2,4-dione

HRID 742971
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HRID 742971 반응식
C(N(C(C)C)C(C)C)C.[Br-].[Li+].Cl[CH2:13][CH2:14][CH2:15][CH2:16][O:17][CH:18]1[CH2:23][CH2:22][CH2:21][CH2:20][O:19]1.[CH3:24][N:25]1[C:30](=[O:31])[C:29]2[CH2:32][NH:33][CH2:34][CH2:35][C:28]=2[NH:27][C:26]1=[O:36]>CN(C)C=O>[CH3:24][N:25]1[C:30](=[O:31])[C:29]2[CH2:32][N:33]([CH2:13][CH2:14][CH2:15][CH2:16][O:17][CH:18]3[CH2:23][CH2:22][CH2:21][CH2:20][O:19]3)[CH2:34][CH2:35][C:28]=2[NH:27][C:26]1=[O:36]
참가 물질실험 절차후처리출처 및 근거반응 노트

참가 물질

6

반응물 4

HCID 81531DiisopropylethylamineHCID 82050Lithium BromideHCID 1704882H-Pyran, 2-(4-chlorobutoxy)tetrahydro-HCID 102414233-methyl-5,6,7,8-tetrahydro-1H-pyrido[4,3-d]pyrimidine-2,4-dione

생성물 1

HCID 194233293-methyl-6-[4-(tetrahydropyran-2-yloxy)butyl]-5,6,7,8-tetrahydro-1H-pyrido[4,3-d]pyrimidine-2,4-dione수율 51%

시약·촉매·용매 1

HCID 6228Dimethylformamide용매

실험 절차

27 g of ethyldiisopropylamine, 18 g of lithium bromide and 46 g of 2-(4-chlorobutoxy) tetrahydropyran (86.3% pure according to GC) were added to 36.3 g of 3-methyl-5,6,7,8-tetrahydro-1H-pyrido[4,3-d]pyrimidine-2,4-dione in 1 l of dimethylformamide, with stirring, and the mixture was stirred for 5 h at 70° C. It was concentrated under reduced pressure and 34.5 g of crude 3-methyl-6-[4-(tetrahydropyran-2-yloxy)butyl]-5,6,7,8-tetrahydro-1H-pyrido[4,3-d]pyrimidine-2,4-dione were obtained after working-up of the residue by extraction with dichloromethane and water and after drying and concentration of the combined dichloromethane phases, and this crude product was purified by column chromatography on aluminum oxide (actiVity grade III) and elution with dichloromethane/ethanol (volume ratio 90:10).

후처리

  1. stirringthe mixture was stirred for 5 h at 70° C
  2. concentrationIt was concentrated under reduced pressure

출처 및 근거

ORD 기록
ord-7b2a6b2f8d0b47d7a07af6a44b1a050d
출처 데이터셋
uspto-grants-1996_09
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US05556854

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