98381-00-1Relevant academic research and scientific papers
REGIOSELECTIVITY IN THE PHOTOCHEMICAL RING CONTRACTION OF 4-DIAZOPYRAZOLIDINE-3,5-DIONES TO GIVE AZA-β-LACTAMS
Moody, Christopher J.,Pearson, Christopher J.,Lawton, Geoffrey
, p. 3167 - 3170 (1985)
The photochemical decomposition of unsymmetrically substituted 4-diazopyrazolidine-3,5-diones leads to aza-β-lactams, and provides some indication of the relative migratory aptitude of nitrogen groups in the Wolff rearrangement.
Rhodium Carbenoid Mediated Cyclisations. Synthesis of 1,2-Diazetidinones (Aza-β-lactams).
Lawton, Geoffrey,Moody, Christopher J.,Pearson, Christopher J.
, p. 899 - 902 (2007/10/02)
Decomposition of the diazo hydrazides (1b-h) in boiling benzene in the presence of a catalytic amount of rhodium(II) acetate gives the corresponding 1,2-diazetidinones (2) in good yield.The aza-β-lactams (2) exhibit the expected high frequency carbonyl st
