Aluminium lithium hydride → 7-Hydroxymethyl-2-phenylmethyl-1,2,3,4,6,7,8,8a-octahydro-pyrrolo[1,2-a]pyrazine

HRID 1594584ノート

反応式

HRID 1594584 の反応式
[H-].[Al+3].[Li+].[H-].[H-].[H-].C[O:8][C:9]([CH:11]1[CH2:27][N:14]2[CH2:15][CH2:16][N:17]([CH2:20][C:21]3[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=3)[C:18](=O)[CH:13]2[CH2:12]1)=O>C1COCC1>[OH:8][CH2:9][CH:11]1[CH2:27][N:14]2[CH2:15][CH2:16][N:17]([CH2:20][C:21]3[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=3)[CH2:18][CH:13]2[CH2:12]1

参加物

4

反応物 2

HCID 21226445Aluminium lithium hydrideHCID 217064047-Methoxycarbonyl-2-phenylmethyl-1,2,3,4,6,7,8,8a-octahydro-pyrrolo[1,2-a]pyrazin-1-one

生成物 1

HCID 217063797-Hydroxymethyl-2-phenylmethyl-1,2,3,4,6,7,8,8a-octahydro-pyrrolo[1,2-a]pyrazine収率 89.2%

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒2 回

反応条件

温度
0 °C

実験手順

A suspension of 3.20 g (84.3 mmol) of lithium aluminum hydride in 30 mL of dry THF was cooled to 0° C. and treated dropwise with a solution of 8.00 g (27.7 mmol) of 7-methoxycarbonyl-2-phenylmethyl-1,2,3,4,6,7,8,8a-octahydro-pyrrolo[1,2-a]pyrazin-1-one (Jones, R. C. F., Howard, K. J., J. Chem. Soc., Perkin Trans. 1, 1993, 2391) in 80 mL of dry THF. After 30 min the reaction was carefully quenched with 3 mL of water, 3 mL of 15% NaOH and 9 of mL water. The mixture was filtered, the filtrate evaporated, the residue taken up in ethyl acetate and washed with brine. The organic layer was dried (magnesium sulfate), filtered, and evaporated to give 6.09 g (89%) of the title compound as a mixture of (7RS,8aSR)- and (7SR,8aSR)-isomers of sufficient purity for use in the next reaction (Preparation 2). m/z (MH+) 247.

後処理

  1. customAfter 30 min the reaction was carefully quenched with 3 mL of water, 3 mL of 15% NaOH and 9 of mL water
  2. filtrationThe mixture was filtered
  3. customthe filtrate evaporated
  4. washwashed with brine
  5. dry with materialThe organic layer was dried (magnesium sulfate)
  6. filtrationfiltered
  7. customevaporated

出典と根拠

ORDレコード
ord-2383ba9519864116938382d102d8b539
出典データセット
uspto-grants-2001_09
特許番号
US06284757B1

反応ノート

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