Potassium Carbonate → HCID 53892462, 화합물

HRID 24693노트

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HRID 24693 반응식
[CH3:1][O:2][C:3]1[CH:8]=[C:7]([O:9][Si](C(C)(C)C)(C2C=CC=CC=2)C2C=CC=CC=2)[CH:6]=[C:5]([O:27][CH3:28])[C:4]=1B(O)O.[CH2:32]([O:34][C:35](=[O:56])[C@H:36]([CH2:48][C:49]1[CH:54]=[CH:53][C:52](Br)=[CH:51][CH:50]=1)[NH:37][C:38](=[O:47])[C:39]1[C:44]([Cl:45])=[CH:43][CH:42]=[CH:41][C:40]=1[Cl:46])[CH3:33].C([O-])([O-])=O.[K+].[K+]>COCCOC.O.CCOC(C)=O.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[CH2:32]([O:34][C:35](=[O:56])[C@H:36]([CH2:48][C:49]1[CH:54]=[CH:53][C:52]([C:4]2[C:5]([O:27][CH3:28])=[CH:6][C:7]([OH:9])=[CH:8][C:3]=2[O:2][CH3:1])=[CH:51][CH:50]=1)[NH:37][C:38](=[O:47])[C:39]1[C:40]([Cl:46])=[CH:41][CH:42]=[CH:43][C:44]=1[Cl:45])[CH3:33]

참가 물질

7

반응물 3

HCID 11430Potassium CarbonateHCID 225718572,6-Dimethoxy-4-(tert-butyl-diphenylsilyloxy)benzeneboronic acidHCID 54106344(S)-Ethyl 3-(4-bromophenyl)-2-(2,6-dichlorobenzamido)propanoate

생성물 1

HCID 53892462HCID 53892462, 화합물수율 53.7%

시약·촉매·용매 3

HCID 178418397HCID 178418397, 화합물촉매HCID 8857Ethyl Acetate용매HCID 18180031Water 1,2-dimethoxyethane용매

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온도
80 °C

실험 절차

A mixture of 2,6-dimethoxy-4-(tert-butyl-diphenylsilyloxy)benzeneboronic acid (3 g), N-(2,6-dichlorobenzoyl)-4-bromo-L-phenylalanine ethyl ester (0.8 g), Pd(PPh3)4 (1 g) and K2CO3 (2.1 g) in DME/H2O (20 mL/0.5 mL) was heated at 80° C. for 6 hour under N2. The mixture was diluted with EtOAc and washed with water, dried and evaporated. The residue was dissolved in EtOAc and the solution was filtered through a silica gel column and evaporated. The residue was dissolved in THF, and TBAF (1.6 M in THF, 4 ml) was added. The mixture was stirred at room temperature for 1 hour, diluted with water and extracted with EtOAc. The extract was washed with water, dried and evaporated. The residue was purified by flash column chromatography (silica gel; eluent: EtOAc/hexane 1/2) to yield 0.5 g of N-(2,6-dichlorobenzoyl)-4-(2,6-dimethoxy-4-hydroxyphenyl)-L-phenylalanine ethyl ester. ESMS m/z: 490 (MH+).

후처리

  1. washwashed with water
  2. customdried
  3. customevaporated
  4. dissolutionThe residue was dissolved in EtOAc
  5. filtrationthe solution was filtered through a silica gel column
  6. customevaporated
  7. dissolutionThe residue was dissolved in THF
  8. additionTBAF (1.6 M in THF, 4 ml) was added
  9. additiondiluted with water
  10. extractionextracted with EtOAc
  11. washThe extract was washed with water
  12. customdried
  13. customevaporated
  14. customThe residue was purified by flash column chromatography (silica gel; eluent: EtOAc/hexane 1/2)

출처 및 근거

ORD 기록
ord-410ad7b90dea4035828019e4f37d1412
출처 데이터셋
uspto-grants-2005_02
특허 번호
US06855843B2

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