76640-40-9Relevant academic research and scientific papers
Conversion of some monocyclic β-lactams into novel di-β-lactams
Sharma,Gupta,Bindra,Sunita
, p. 3295 - 3298 (1980)
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.
Synthesis of Some Novel Di- and Tri-β-lactams from Glycine
Sharma, S. D.,Mehra, Usha
, p. 545 - 551 (2007/10/02)
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
