ChemicalBook CAS DataBase List Ceftizoxime Impurity 20

Ceftizoxime Impurity 20 synthesis

1synthesis methods

Product Name:Ceftizoxime Impurity 20
CAS Number:33477-97-3
Molecular formula:C15H14N2O4S
Molecular Weight:318.35

5-Thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid, 8-oxo-7-[(2-phenylacetyl)amino]-, diphenylmethyl ester, (6R,7R)-

36923-19-0
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33477-97-3
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Yield:33477-97-3 77%

Reaction Conditions:

with iodotrimethylsilane*triphenylphosphine in dichloromethane at 20; for 4 h;Substitution;

References:

Cha, Kyung Hoi;Kang, Tae Won;Cho, Dong Ock;Lee, Hong-Woo;Shin, Jaewook;Jin, Kyung Yong;Kim, Kyung-Whan;Kim, Jung-Woo;Hong, Chung-Il [Synthetic Communications,1999,vol. 29,# 20,p. 3533 - 3540]