Process and ester derivatives useful for preparation of...

Details Process and ester derivatives useful for preparation of... Process and ester derivatives useful for preparation of...

C - Chemistry, Metallurgy

07

D

C07D 501/08 (2006.01) C07D 205/095 (2006.01) C07D 277/00 (2006.01) C07D 405/12 (2006.01) C07D 501/00 (2006.01) C07D 501/18 (2006.01) C07D 501/20 (2006.01) C07D 513/04 (2006.01) C07F 9/568 (2006.01) C07F 9/6558 (2006.01)

Patent

CA 2436863

This invention relates a process for preparing a compound of formula (I) wherein R1 is para-nitrobenzyl or allyl; and X is halo, which is useful to prepare 3-cyclic-ether-substituted cephalosporins, from trimethylphosphinic compounds. This invention also relates to compounds useful in such process.

L'invention concerne un procédé permettant de préparer un composé de formule (I) où R?1¿ représente <i>para</i>-nitrobenzyle ou allyle; et X représente un halogène, qui est utilisé pour préparer des céphalosporines substituées par des éthers cycliques en position 3, à partir de composés triméthylphosphiniques. L'invention concerne également des composés utiles dans un tel procédé.

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