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Formic Acid → (3aRS,4RS,6aSR)-2-benzyl-4-(4-bromobenzyl)-5,6,6-trimethyl-tetrahydro-pyrrolo[3,4-c]pyrrole-1,3-dione

HRID 2293300
ノート
印刷プレビュー

反応式

HRID 2293300 の反応式
[CH2:1]([N:8]1[C:15](=[O:16])[CH:14]2[CH:10]([C:11]([CH3:26])([CH3:25])[NH:12][CH:13]2[CH2:17][C:18]2[CH:23]=[CH:22][C:21]([Br:24])=[CH:20][CH:19]=2)[C:9]1=[O:27])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[CH:28](O)=O.C=O>[OH-].[Na+]>[CH2:1]([N:8]1[C:15](=[O:16])[CH:14]2[CH:10]([C:11]([CH3:25])([CH3:26])[N:12]([CH3:28])[CH:13]2[CH2:17][C:18]2[CH:19]=[CH:20][C:21]([Br:24])=[CH:22][CH:23]=2)[C:9]1=[O:27])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1
参加物反応条件実験手順後処理出典と根拠反応ノート

参加物

5

反応物 3

HCID 284Formic AcidHCID 712FormaldehydeHCID 69952519(3aRS,4RS,6aSR)-2-benzyl-4-(4-bromo-benzyl)-6,6-dimethyl-tetrahydro-pyrrolo[3,4-c]pyrrole-1,3-dione

生成物 1

HCID 69953772(3aRS,4RS,6aSR)-2-benzyl-4-(4-bromobenzyl)-5,6,6-trimethyl-tetrahydro-pyrrolo[3,4-c]pyrrole-1,3-dione収率 85.9%

試薬・触媒・溶媒 1

HCID 14798Sodium Hydroxide
溶媒

反応条件

温度
100 °C

実験手順

A mixture of 3.88 g (9.1 mmol) of (3aRS,4RS,6aSR)-2-benzyl-4-(4-bromo-benzyl)-6,6-dimethyl-tetrahydro-pyrrolo[3,4-c]pyrrole-1,3-dione, 85% formic acid (4.9 g, 90 mmol) and 35% formalin solution (2.6 g, 30 mmol) were heated to 100° C. for 5.5 hours. After cooling 1N NaOH (50 ml) was added and the mixture was extracted four times with dichloromethane. The organic phase was concentrated and the residue was separated chromatographically (hexane/ethyl acetate 3:1+1% triethylamine). 3.45 g of (3aRS, 4RS,6aSR)-2-benzyl-4-(4-bromobenzyl)-5,6,6-trimethyl-tetrahydro-pyrrolo[3,4-c]pyrrole-1,3-dione were isolated as a yellowish oil. FAB-MS: 441 ([M+H]+, 40); 271 (100); 212 (5); 169 (11); 136 (14); 110 (26); 91 (42).

後処理

  1. additionwas added
  2. extractionthe mixture was extracted four times with dichloromethane
  3. concentrationThe organic phase was concentrated
  4. customthe residue was separated chromatographically (hexane/ethyl acetate 3:1+1% triethylamine)

出典と根拠

ORDレコード
ord-e5a788c2b1f14804b0e297c5aa895b7e
出典データセット
uspto-grants-1997_11
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US05686459

反応ノート

読み込み中…

このページの内容参加物反応条件実験手順後処理出典と根拠反応ノート