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Hydrogen Peroxide → ditert-butyl(1S,2S,4S,5R,6R)-2-(tert-butoxycarbonylamino)-4-hydroxy-bicyclo[3.1.0]hexane-2,6-dicarboxylate

HRID 2173005
ノート
印刷プレビュー

反応式

HRID 2173005 の反応式
C([BH-](C(CC)C)C(CC)C)(CC)C.[Li+].[C:15]([O:19][C:20]([NH:22][C@@:23]1([C:37]([O:39][C:40]([CH3:43])([CH3:42])[CH3:41])=[O:38])[CH2:28][C:27](=[O:29])[C@@H:26]2[C@H:24]1[C@H:25]2[C:30]([O:32][C:33]([CH3:36])([CH3:35])[CH3:34])=[O:31])=[O:21])([CH3:18])([CH3:17])[CH3:16].C([O-])([O-])=O.[Na+].[Na+].OO>O1CCCC1.O>[C:15]([O:19][C:20]([NH:22][C@@:23]1([C:37]([O:39][C:40]([CH3:43])([CH3:42])[CH3:41])=[O:38])[CH2:28][C@H:27]([OH:29])[C@@H:26]2[C@H:24]1[C@H:25]2[C:30]([O:32][C:33]([CH3:35])([CH3:34])[CH3:36])=[O:31])=[O:21])([CH3:18])([CH3:16])[CH3:17]
参加物実験手順後処理出典と根拠反応ノート

参加物

7

反応物 4

HCID 784Hydrogen PeroxideHCID 10340Sodium CarbonateHCID 3611392Lithium tri-s-butylborohydrideHCID 59712878Bicyclo[3.1.0]hexane-2,6-dicarboxylic acid, 2-[[(1,1-dimethylethoxy)carbonyl]amino]-4-oxo-, 2,6-bis(1,1-dimethylethyl) ester, (1S,2S,5R,6R)-

生成物 1

HCID 59712892ditert-butyl(1S,2S,4S,5R,6R)-2-(tert-butoxycarbonylamino)-4-hydroxy-bicyclo[3.1.0]hexane-2,6-dicarboxylate
収率 86.1%

試薬・触媒・溶媒 2

HCID 962Water溶媒2 回HCID 8028Tetrahydrofuran溶媒2 回

実験手順

Add 1M lithium tri(sec-butyl)borohydride in tetrahydrofuran (2.67 L, 2.67 mol) dropwise to a solution of di-tert-butyl(1S,2S,5R,6R)-2-[(tert-butoxycarbonyl)amino]-4-oxobicyclo[3.1.0]hexane-2,6-dicarboxylate (1000 g, 2.43 mol) in dry tetrahydrofuran (10 L) at 0° C. under nitrogen. After 2 hours at 0° C., 2M Na2CO3 in water (850 g, 8.02 mol) is added at 0° C. over 2 hours followed by 35% aqueous hydrogen peroxide (740 mL, 8.99 mol) in water (3.3 L). After 40 minutes, the mixture is warmed to ambient temperature whereupon the organic phase is separated. The organic phase is diluted with methyl tert-butyl ether (3.5 L) and the layers are separated again. The aqueous phase is extracted with methyl tert-butyl ether (3.5 L). All the combined organic phases are washed successively with 1M aqueous Na2SO3 (2.67 L), water (2.67 L), and brine (2.67 L), dried over sodium sulfate, filtered and concentrated to a volume of 3 L. The precipitated solid is filtered and washed with heptane (1.3 L) to obtain the title compound (864.76 g). The mother liquors are concentrated to dryness and the residue is triturated with heptane (500 mL) and filtered to obtain additional title compound (130.64 g, total 995.4 g, yield 99%). MS (m/z): 436 (M+23).

後処理

  1. waitAfter 40 minutes
  2. customis separated
  3. additionThe organic phase is diluted with methyl tert-butyl ether (3.5 L)
  4. customthe layers are separated again
  5. extractionThe aqueous phase is extracted with methyl tert-butyl ether (3.5 L)
  6. washAll the combined organic phases are washed successively with 1M aqueous Na2SO3 (2.67 L), water (2.67 L), and brine (2.67 L)
  7. dry with materialdried over sodium sulfate
  8. filtrationfiltered
  9. concentrationconcentrated to a volume of 3 L
  10. filtrationThe precipitated solid is filtered
  11. washwashed with heptane (1.3 L)

出典と根拠

ORDレコード
ord-2b66347230aa4ba981b33a6e74dc98be
出典データセット
uspto-grants-2015_06
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US09056844B2

反応ノート

読み込み中…

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