Cesium carbonate → 5-(3,3-Dimethyl-but-1-ynyl)-3-[2-(ethoxy-methyl-phosphinoyl)-ethylamino]-thiophene-2-carboxylic acid methyl ester

HRID 1614913ノート

反応式

HRID 1614913 の反応式
[CH3:1][O:2][C:3]([C:5]1[S:6][C:7]([C:11]#[C:12][C:13]([CH3:16])([CH3:15])[CH3:14])=[CH:8][C:9]=1I)=[O:4].C1C=CC(P(C2C(C3C(P(C4C=CC=CC=4)C4C=CC=CC=4)=CC=C4C=3C=CC=C4)=C3C(C=CC=C3)=CC=2)C2C=CC=CC=2)=CC=1.C([O-])([O-])=O.[Cs+].[Cs+].[CH2:69]([O:71][P:72]([CH2:75][CH2:76][NH2:77])([CH3:74])=[O:73])[CH3:70]>C1(C)C=CC=CC=1.CC([O-])=O.CC([O-])=O.[Pd+2]>[CH3:1][O:2][C:3]([C:5]1[S:6][C:7]([C:11]#[C:12][C:13]([CH3:16])([CH3:15])[CH3:14])=[CH:8][C:9]=1[NH:77][CH2:76][CH2:75][P:72]([O:71][CH2:69][CH3:70])([CH3:74])=[O:73])=[O:4]

参加物

7

反応物 4

HCID 10796Cesium carbonateHCID 634876Binap, (A+-)-HCID 581139365-(3,3-Dimethyl-but-1-ynyl)-3-iodo-thiophene-2-carboxylic acid methyl esterHCID 85676205Ethyl (2-aminoethyl)(methyl)phosphinate

生成物 1

HCID 670343375-(3,3-Dimethyl-but-1-ynyl)-3-[2-(ethoxy-methyl-phosphinoyl)-ethylamino]-thiophene-2-carboxylic acid methyl ester収率 66%

試薬・触媒・溶媒 2

HCID 167845palladium(II) acetate触媒HCID 1140Toluene溶媒

実験手順

5-(3,3-Dimethyl-but-1-ynyl)-3-iodo-thiophene-2-carboxylic acid methyl ester (669 mg, 1.92 mmol), Pd(OAc)2 (64 mg, 0.288 mmol), BINAP (179 mg, 0.288 mmol), and Cs2CO3 (1.56 g, 4.8 mmol) were combined in a sealed tube. A solution of (2-amino-ethyl)-methyl-phosphinic acid ethyl ester (578 mg, 3.85 mmol) in toluene (14 mL), which had been degassed by bubbling argon through it for 30 minutes, was added. The sealed tube was purged with argon and then sealed. The tube was placed in a 120° C. oil bath. The reaction was stirred overnight, then cooled to room temperature and filtered through filter paper. The residue was stirred vigorously with EtOAc and then the EtOAc was passed through filter paper. The combined filtrates were concentrated and 5-(3,3-Dimethyl-but-1-ynyl)-3-[2-(ethoxy-methyl-phosphinoyl)-ethylamino]-thiophene-2-carboxylic acid methyl ester (466 mg, 66%) was isolated by silica gel column chromatography (MeOH/EtOAc) as a green crystalline solid.

後処理

  1. customby bubbling argon through it for 30 minutes
  2. additionwas added
  3. customThe sealed tube was purged with argon
  4. customsealed
  5. customwas placed in a 120° C.
  6. filtrationfiltered
  7. filtrationthrough filter paper
  8. stirringThe residue was stirred vigorously with EtOAc
  9. filtrationthrough filter paper
  10. concentrationThe combined filtrates were concentrated

出典と根拠

ORDレコード
ord-f9d663a4321a4f2893796f8e2916c058
出典データセット
uspto-grants-2014_07
特許番号
US08765722B2

反応ノート

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