Acetic Anhydride → Oxacycloundecane-2,11-dione

HRID 1901419

Reaktionsgleichung

Reaktionsgleichung von HRID 1901419
C(N(C(S)=S)[CH2:7][C:8](F)(F)F)C(F)(F)F.[C:15]([O:18][C:19](=[O:21])[CH3:20])(=[O:17])[CH3:16].[CH2:22]1[CH2:26]O[CH2:24][CH2:23]1>>[C:19]1(=[O:21])[O:18][C:15](=[O:17])[CH2:16][CH2:8][CH2:7][CH2:24][CH2:23][CH2:22][CH2:26][CH2:20]1

Komponenten

4

Edukt 3

HCID 7918Acetic AnhydrideHCID 8028TetrahydrofuranHCID 147094Bis(trifluoroethyl)carbamodithioic acid

Produkt 1

HCID 75712Oxacycloundecane-2,11-dione

Versuchsvorschrift

BTCA was reacted with two equivalents of methoxy PEG amine in refluxing THF for 5 hours to yield dimethoxy-PEG tetracarboxybenzoate, with two remaining carboxylic groups. The PEG-dimer was reacted with acetic anhydride and then with sebacic anhydride to form the tetra-armed diblock PEG2 -benzene-PSA2.

Aufarbeitung

  1. customto yield dimethoxy-PEG tetracarboxybenzoate

Quellen und Nachweise

ORD-Eintrag
ord-040109af42fe4a03a730752de3ccc14b
Quelldatensatz
uspto-grants-1996_11
Patentnummer
US05578325

Verknüpfte Notizen

Wird geladen…