57561-96-3

Upstream product

• 74-93-1 methylthiol 

Downstream Products

• 143159-86-8 Diphenylmethyl 2-<(3R,4R)-4-<(p-toluenesulfonyl)thio>-3-(phenoxyacetamido)-2-oxoazetidin-1-yl>-2,3-butadienoate 
• 130516-12-0 diphenylmethyl (6R,7S)-7-(phenoxyacetamido)-3-phenylceph-3-em-4-carboxylate 
• 33748-11-7 diphenylmethyl (6R,7S)-7-(phenoxyacetamido)-3-vinylceph-3-em-4-carboxylate 
• 130516-11-9 diphenylmethyl (6R,7S)-7-(phenoxyacetamido)-3-tert-butylceph-3-em-4-carboxylate 
• 130516-10-8 diphenylmethyl (6R,7S)-7-(phenoxyacetamido)-3-ethylceph-3-em-4-carboxylate 
• 157584-71-9 Diphenylmethyl 2-<(3R,4R)-<(p-toluenesulfonyl)thio>-3-(phenoxyacetamido)-2-oxoazetidin-1-yl>-3-<(methanesulfonyl)oxy>-2-butenoate 

Relevant academic research and scientific papers

A non ozone approach to enol azetidinones: Synthetic precursors to β-lactam antibiotics

The enol-substituted azetidininones (diphenylmethyl 2-[(3R,4R)-4-(2-benzothiazolyldithio)-2-oxo-3-(phenoxyacetylamino)-1- azetidinyl]-3-hydroxy-2-butenoate and derivatives) are valuable intermediates in the synthesis of a variety of cephalosporins. A comb

Processes for making cephems from allenylazetidinone derivatives

This invention relates to a novel process for making a cephem of formula II from a 2-(3-amino-2-oxo-azetidin-1-yl)-2,3-butadienoate intermediate of formula I using an organo-copper reagent. In another aspect, this invention is concerned with said intermed

Processes for making cephems from allenylazetidinone derivatives

This invention relates to a novel process for making a cephem of formula II from 2-(3-amino-2-oxo-azetidin-1-yl)-2,3-butadienoate of formula I. In another aspect, this invention is concerned with a process of further converting a compound of formula II in