Methanol → 3-[N-(benzyl)-N-(diphenylmethyl)aminosulfonyl]-2(R)-methylpropionic acid

HRID 8837

反応式

HRID 8837 の反応式
[CH2:1]([N:8]([CH:19]([C:26]1[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=1)[C:20]1[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=1)[S:9]([CH2:12][C@H:13]([CH3:18])[C:14]([O:16]C)=[O:15])(=[O:11])=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[Li+].[OH-].CO.OS([O-])(=O)=O.[K+]>C1COCC1.C(OCC)(=O)C>[CH2:1]([N:8]([CH:19]([C:26]1[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=1)[C:20]1[CH:21]=[CH:22][CH:23]=[CH:24][CH:25]=1)[S:9]([CH2:12][C@H:13]([CH3:18])[C:14]([OH:16])=[O:15])(=[O:11])=[O:10])[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

参加物

7

反応物 4

HCID 887MethanolHCID 3939Lithium HydroxideHCID 516920Potassium bisulfateHCID 18738452methyl 3-[N-(benzyl)-N-(diphenylmethyl)aminosulfonyl]-2(R)-methylpropionate

生成物 1

HCID 187384373-[N-(benzyl)-N-(diphenylmethyl)aminosulfonyl]-2(R)-methylpropionic acid収率 80.7%

試薬・触媒・溶媒 2

HCID 8028Tetrahydrofuran溶媒HCID 8857Ethyl Acetate溶媒

実験手順

A 50 mL round bottom flask equipped with magnetic stir bar was charged with 320 mg of methyl 3-[N-(benzyl)-N-(diphenylmethyl)aminosulfonyl]-2(R)-methylpropionate and 120 mg LiOH (4 eq) in 4 mL 50% aq THF. After 5 minutes 2 mL MeOH added to get homogeneous solution, after 1 hour the reaction was partioned between ethyl acetate and 5% aq KHSO4. The organic phase was washed with brine, dried, and concentrated in vacuo to yield 250 mg of 3-[N-(benzyl)-N-(diphenylmethyl)aminosulfonyl]-2(R)-methylpropionic acid as a clear semi-solid. HRMS (M+Li): calcd. 430.1664, obs. 430.1698.

後処理

  1. customA 50 mL round bottom flask equipped with magnetic stir bar
  2. customto get homogeneous solution
  3. washThe organic phase was washed with brine
  4. customdried
  5. concentrationconcentrated in vacuo

出典と根拠

ORDレコード
ord-38a2481c78754a3cb5c7d1ecd2475eae
出典データセット
uspto-grants-2006_08
特許番号
US07091219B2

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