76640-36-3

Upstream product

• 24033-09-8 N-(benzo[d][1,3]dioxol-5-ylmethylene)-4-methoxyaniline 
• 76640-35-2 ((2S,3R)-2-Benzo[1,3]dioxol-5-yl-4-oxo-3-phenoxy-azetidin-1-yl)-acetic acid 
• 76640-39-6 (3S,4R)-4-Benzo[1,3]dioxol-5-yl-3-{[1-benzo[1,3]dioxol-5-yl-meth-(E)-ylidene]-amino}-1-(4-methoxy-phenyl)-azetidin-2-one 
• 701-99-5 Phenoxyacetyl chloride 
• 76640-39-6 (3S,4R)-4-Benzo[1,3]dioxol-5-yl-3-{[1-benzo[1,3]dioxol-5-yl-meth-(Z)-ylidene]-amino}-1-(4-methoxy-phenyl)-azetidin-2-one 
• 76640-34-1 ((2S,3R)-2-Benzo[1,3]dioxol-5-yl-4-oxo-3-phenoxy-azetidin-1-yl)-acetic acid ethyl ester 
• 76640-33-0 {[1-Benzo[1,3]dioxol-5-yl-meth-(Z)-ylidene]-amino}-acetic acid ethyl ester 
• 24033-09-8 3,4-Methylenedioxybenzylidene-p-anisidine 
• 76640-38-5 3-Amino-1-p-anisyl-4-(3,4-methylenedioxyphenyl)azetidin-2-one 
• 76640-37-4 1-p-Anisyl-3-carbethoxyacetonylamino-4-(3,4-methylenedioxyphenyl)azetidin-2-one 
• 120-57-0 piperonal 

Relevant academic research and scientific papers

Synthesis of Some Novel Di- and Tri-β-lactams from Glycine

Annelation of the schiff bases (II) with appropriate β-lactam acids (I) results in the formation of di-β-lactams (III).Alternately IIIb can also be prepared as follows: Potassium carbethoxyacetonylglycinate (IV) on treatment with schiff base (IIb) using P

Conversion of some monocyclic β-lactams into novel di-β-lactams

Monocyclic β-lactams (V & XI) carrying a carboxy function have been used to annelate the Schiff bases (II & X) using POCl3 in the presence of triethylamine to obtain the di-β-lactams (VI & XII). Alternately, (VI) could also be prepared by annelation of the Schiff base (IX) derived from the α-amino-β-lactam (VIII), with phenoxyacetyl chloride.