Reaktion #482421

ord-964c82dc395b415ab83f2bc3e566b54c

Reaktionsgleichung

CC(C)(C)OC(=O)OC(=O)OC(C)(C)C
di-t-butyl dicarbonate
C=Cc1ccc(O)cc1
p-hydroxystyrene
O
water
Cl
hydrochloric acid
→
C=Cc1ccc(O)cc1.C=Cc1ccc(OC(=O)OC(C)(C)C)cc1
p-hydroxystyrene p-(t-butyloxycarbonyloxy)-styrene

Edukte

CC(C)(C)OC(=O)OC(=O)OC(C)(C)C
di-t-butyl dicarbonate
C=Cc1ccc(O)cc1
p-hydroxystyrene
O
water
Cl
hydrochloric acid

Reagenzien

Keine

Lösungsmittel

c1ccncc1
pyridine

Reaktionsbedingungen

Detaillierte Bedingungen
See reaction.notes.procedure_details.

Aufarbeitung

  1. 1
    workup.ADDITIONwas added to the solution
  2. 2
    Sonstigethe reaction at room temperature for 3 hours
  3. 3
    Sonstigethe reaction liquid
  4. 4
    SonstigeThe powder precipitated
  5. 5
    Filtrationwas collected by filtration
  6. 6
    Waschenwashed with water
  7. 7
    Sonstigedried

Vorschrift

In 40 ml of pyridine was dissolved poly p-hydroxystyrene (VP-8000, manufactured by Nippon Soda Co., Ltd., weight average molecular weight 1000), and 1.28 g of di-t-butyl dicarbonate was added to the solution with stirring at room temperature. After carrying out the reaction at room temperature for 3 hours, the reaction liquid was added to a solution of 1 liter of ion-exchanged water and 20 g of concentrated hydrochloric acid. The powder precipitated was collected by filtration, washed with water, and dried to obtain a p-hydroxystyrene/p-(t-butyloxycarbonyloxy)-styrene copolymer (60/40).

Quelle

DOI: 10.6084/m9.figshare.5104873.v1Patent: US06605409B2uspto-grants-2003_08