Реакция #1821

ord-61e90dfc436e46c68b3d763ba8118cbb

Уравнение реакции

Nc1ccn([C@H]2C[C@H](O)[C@@H](CO)O2)c(=O)n1
material
Nc1ccn([C@H]2C[C@H](O)[C@@H](CO)O2)c(=O)n1
2' Deoxycytidine
CC(=O)OC(C)=O
acetic anhydride
→
CC(=O)Nc1ccn([C@H]2C[C@H](O)[C@@H](CO)O2)c(=O)n1
crystalline product
Выход 98.2%
CC(=O)Nc1ccn([C@H]2C[C@H](O)[C@@H](CO)O2)c(=O)n1
N4 -Acetyl-2'Deoxycytidine
Выход 98.2%

Реактанты

Nc1ccn([C@H]2C[C@H](O)[C@@H](CO)O2)c(=O)n1
material
Nc1ccn([C@H]2C[C@H](O)[C@@H](CO)O2)c(=O)n1
2' Deoxycytidine
CC(=O)OC(C)=O
acetic anhydride

Реагенты

Нет

Растворители

CN(C)C=O
N,N-dimethylformamide

Условия реакции

Подробные условия
See reaction.notes.procedure_details.

Обработка

  1. 1
    ДругоеDMF was removed under reduced pressure
  2. 2
    workup.ADDITIONthe resulting residue was treated with the excess of 100 ml dimethyl ether

Методика

To 61.29 g (270 mmol) of the material of Example I dissolved in 1300 ml of anhydrous N,N-dimethylformamide ("DMF") (Aldrich; Cat. No. 22, 70506), was added 28 ml (296 mmol) of acetic anhydride (Aldrich; Cat. No. 11,004-3), and the resulting mixture was stirred at room temperature for 20 hrs. DMF was removed under reduced pressure, and the resulting residue was treated with the excess of 100 ml dimethyl ether; 71.4 g (98% yield) of a crystalline product was obtained and collected by filtration, washed thoroughly with dimethyl ether, and dried over P2O5 for 3 hrs. This product had a melting point of 150°-170° C.; the published melting point for this product 154°-176° C.

Источник

DOI: 10.6084/m9.figshare.5104873.v1Патент: US05726301uspto-grants-1998_03