Sodium Carbonate → ethyl (Z)-2-ethoxy-3-(3'-methylaminobiphenyl-4-yl)acrylate

HRID 390682ノート

反応式

HRID 390682 の反応式
Br[C:2]1[CH:7]=[CH:6][C:5](/[CH:8]=[C:9](\[O:15][CH2:16][CH3:17])/[C:10]([O:12][CH2:13][CH3:14])=[O:11])=[CH:4][CH:3]=1.C(=O)([O-])[O-].[Na+].[Na+].[CH3:24][NH:25][C:26]1[CH:31]=[CH:30][CH:29]=[C:28](B2OC(C)(C)C(C)(C)O2)[CH:27]=1>C1(C)C=CC=CC=1.C(O)C.C(OCC)(=O)C.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.Cl[Pd]Cl.[Fe+2]>[CH2:16]([O:15]/[C:9](=[CH:8]\[C:5]1[CH:6]=[CH:7][C:2]([C:28]2[CH:29]=[CH:30][CH:31]=[C:26]([NH:25][CH3:24])[CH:27]=2)=[CH:3][CH:4]=1)/[C:10]([O:12][CH2:13][CH3:14])=[O:11])[CH3:17]

参加物

8

反応物 3

HCID 10340Sodium CarbonateHCID 57976762N-Methyl-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)anilineHCID 68960230ethyl (Z)-3-(4-bromophenyl)-2-ethoxyacrylate

生成物 1

HCID 86626079ethyl (Z)-2-ethoxy-3-(3'-methylaminobiphenyl-4-yl)acrylate収率 94%

試薬・触媒・溶媒 4

HCID 44119782Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+)触媒HCID 702Ethanol溶媒HCID 1140Toluene溶媒HCID 8857Ethyl Acetate溶媒

実験手順

To a solution of 10.8 g (36.1 mmol) of ethyl (Z)-3-(4-bromophenyl)-2-ethoxyacrylate prepared beforehand as described in Example 1c and 108 mL (217 mmol) of aqueous 2 M sodium carbonate solution in 120 mL of toluene, 1.5 g (1.8 mmol) of dichloro[1,1′-bis(diphenylphosphino)ferrocene]palladium are added. The reaction medium is stirred and a solution of 9.25 g (39.7 mmol) of methyl[3-(4,4,5,5-tetramethyl[1.3.2]dioxaborolan-2-yl)phenyl]amine in 90 mL of ethanol is then added dropwise. After stirring at 80° C. for 2 hours, the reaction medium is hydrolyzed and diluted with ethyl acetate. After separation of the phases by settling, the ethyl acetate phase is washed with saturated sodium chloride solution, dried over magnesium sulfate, filtered and evaporated. The residue obtained is purified by chromatography on a column of silica eluted with a 90/10 and then 80/20 heptane/ethyl acetate mixture. 10.5 g (94%) of ethyl (Z)-2-ethoxy-3-(3′-methylaminobiphenyl-4-yl)acrylate are obtained in the form of a yellow oil. After taking up the product in pentane, 9.5 g (85%) of ethyl (Z)-2-ethoxy-3-(3′-methylaminobiphenyl-4-yl)acrylate are obtained in the form of a pale yellow solid with a melting point of 52° C.

後処理

  1. additionare added
  2. stirringAfter stirring at 80° C. for 2 hours
  3. customAfter separation of the phases
  4. washthe ethyl acetate phase is washed with saturated sodium chloride solution
  5. dry with materialdried over magnesium sulfate
  6. filtrationfiltered
  7. customevaporated
  8. customThe residue obtained
  9. customis purified by chromatography on a column of silica
  10. washeluted with a 90/10

出典と根拠

ORDレコード
ord-3358cfc0fc0e46f696702c14a115f559
出典データセット
uspto-grants-2013_02
特許番号
US08383652B2

反応ノート

読み込み中…