Methanol → (2E,4E)-4-(1-(Benzo[d][1,3]dioxol-5-ylmethyl)pyrrolidin-3-ylidene)but-2-enoic acid

HRID 1907747Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1907747
[O:1]1[C:5]2[CH:6]=[CH:7][C:8]([CH2:10][N:11]3[CH2:15][CH2:14]/[C:13](=[CH:16]\[CH:17]=[CH:18]\[C:19]([O:21]CC)=[O:20])/[CH2:12]3)=[CH:9][C:4]=2[O:3][CH2:2]1.C1COCC1.CO.[OH-].[Li+]>O>[O:1]1[C:5]2[CH:6]=[CH:7][C:8]([CH2:10][N:11]3[CH2:15][CH2:14]/[C:13](=[CH:16]\[CH:17]=[CH:18]\[C:19]([OH:21])=[O:20])/[CH2:12]3)=[CH:9][C:4]=2[O:3][CH2:2]1

Komponenten

6

Edukt 4

HCID 887MethanolHCID 3939Lithium HydroxideHCID 8028TetrahydrofuranHCID 59737265(2E,4E)-Ethyl 4-(1-(benzo[d][1,3]dioxol-5-ylmethyl)pyrrolidin-3-ylidene)but-2-enoate

Produkt 1

HCID 59737348(2E,4E)-4-(1-(Benzo[d][1,3]dioxol-5-ylmethyl)pyrrolidin-3-ylidene)but-2-enoic acid

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 962WaterLösungsmittel

Reaktionsbedingungen

Temperatur
-78 °C

Versuchsvorschrift

A solution of ester 275 (0.15 g, 0.485 mmol) in 2:1 THF:MeOH (6 mL) was treated with a solution of lithium hydroxide (59 mg, 1.41 mmol) in H2O (3 mL) and stirred for 18 h. The reaction mixture was quenched with 1N HCl (2.0 mL), concentrated, diluted with H2O, cooled to −78° C. and lyophilized to provide title compound 276 (quantitative, in a mixture with LiCl).

Aufarbeitung

  1. customThe reaction mixture was quenched with 1N HCl (2.0 mL)
  2. concentrationconcentrated
  3. additiondiluted with H2O

Quellen und Nachweise

ORD-Eintrag
ord-92d5f264282744acb69bd5daad313487
Quelldatensatz
uspto-grants-2013_12
Patentnummer
US08598168B2

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