66346-40-5

Upstream product

• 122-59-8 2-phenoxyacetic acid 
• 402750-01-0 (E)-N-(benzo[d][1,3]dioxol-5-ylmethylene)-4-methoxybenzenamine 
• 114476-97-0 phenoxythioacetic acid S-benzothiazol-2-yl ester 
• 24033-09-8 N-(benzo[d][1,3]dioxol-5-ylmethylene)-4-methoxyaniline 
• 120-57-0 piperonal 
• 104-94-9 4-methoxy-aniline 

Relevant academic research and scientific papers

2,2′-dibenzothiazolyl disulfide: A versatile reagent for the synthesis of 2-azetidinones

2,2′-Dibenzothiazolyl disulfide has been found to be a versatile reagent that provides a convenient and efficient route for the synthesis of β-lactams from Schiffs bases and alkoxy/aryloxy acetic acids. The process involves the formation of thioester of the corresponding acid. Finally, condensation of titanium enolates, derived from these esters, with imines completes the synthesis of 2-azetidinones.

Synthesis of β-Lactams Through the Use of Mixed Carboxylic-Sulphonic Acid Anhydrides

Use of mixed carboxylic-sulphonic acid anhydrides for the synthesis of a variety of simple and fused β-lactams (I-IV, VI and VII ) is described