3,4-dihydro-2-methoxycarbonyl-2H-(1,3)-thiazino-[3,2-a]benzimidazole → 3,4-dihydro-2-hydroxymethyl-2H-(1,3)-thiazino[3,2-a]benzimidazole

HRID 1164390노트

반응식

HRID 1164390 반응식
C[O:2][C:3]([CH:5]1[S:17][C:9]2=[N:10][C:11]3[CH:16]=[CH:15][CH:14]=[CH:13][C:12]=3[N:8]2[CH2:7][CH2:6]1)=O.[H-].[Al+3].[Li+].[H-].[H-].[H-]>O1CCCC1>[OH:2][CH2:3][CH:5]1[S:17][C:9]2=[N:10][C:11]3[CH:16]=[CH:15][CH:14]=[CH:13][C:12]=3[N:8]2[CH2:7][CH2:6]1

참가 물질

4

반응물 2

HCID 128512483,4-dihydro-2-methoxycarbonyl-2H-(1,3)-thiazino-[3,2-a]benzimidazoleHCID 21226445Aluminium lithium hydride

생성물 1

HCID 128523233,4-dihydro-2-hydroxymethyl-2H-(1,3)-thiazino[3,2-a]benzimidazole수율 54.5%

시약·촉매·용매 1

HCID 8028Tetrahydrofuran용매

실험 절차

To a solution of 2.48 g (10 m mole) of 3,4-dihydro-2-methoxycarbonyl-2H-(1,3)-thiazino-[3,2-a]benzimidazole in dry tetrahydrofuran (50 ml) was added dropwise 0.5 g of lithium aluminum hydride devided in small pieces, with stirring under ice cooling condition. After thirty minutes, the resultant complex was decomposed by the addition of hydrated tetrahydro furan and subjected to filtration. Subsequent to drying the filtrate over anhydrous magnesium sulfate, tetrahydrofuran was evaporated under reduced pressure. The residue was chromatographed on silica gel and eluted with chloroform to obtain 1.2 g (yield: 54.5%) of the intended product, m.p. 112°-113° C.;

후처리

  1. waitAfter thirty minutes
  2. filtrationsubjected to filtration
  3. dry with materialSubsequent to drying the filtrate over anhydrous magnesium sulfate, tetrahydrofuran
  4. customwas evaporated under reduced pressure
  5. customThe residue was chromatographed on silica gel
  6. washeluted with chloroform

출처 및 근거

ORD 기록
ord-542ea406a2db425ca62f04095f6a1593
출처 데이터셋
uspto-grants-1983_01
특허 번호
US04369309

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