97482-27-4Relevant articles and documents
The role of Zn2+ in enhancing the rate and stereoselectivity of the aldol reactions catalyzed by the simple prolinamide model
Andreu, Cecilia,Asensio, Gregorio
body text, p. 7050 - 7056 (2011/10/05)
The aldol reaction between acetone and 4-nitrobenzaldehyde catalyzed by single l-prolinamide and its zinc complexes has been studied. An increase in the rate and the stereoselectivity of the reaction has been shown by using zinc derivatives. A mechanistic
Inhibition of imidazolidinone intermediate formation in the aldol reactions catalyzed by zinc-prolinamide complexes
Andreu, Cecilia,Varea, Teresa,Asensio, Gregorio
experimental part, p. 8705 - 8709 (2011/12/01)
The use of zinc salts as cocatalysts in aldol condensations catalyzed by single prolinamide (and in the extension by other more complex prolinamides) can prevent the formation of the parasitic intermediate imidazolidinone, with faster and also more stereoselective reactions than those catalyzed by the free amine. This new finding, together with this ion's already known properties, make zinc salts highly suitable additives for aldol reactions catalyzed for prolinamide derivatives.
Synthesis and antibacterial activity of 1-β-methylcarbapenem having a 1,3-diazabicyclo[3.3.0]octan-4-one moiety
Nam, Ki Hong,Oh, Chang-Hyun,Cho, Jin Koo,Kim, Hyo Jung,Lee, Ki-Soo,Cho, Jung-Hyuck
, p. 443 - 446 (2007/10/03)
The synthesis of new series of 1-β-methylcarbapenems having a 1,3-diazabicyclo[3.3.0]octan-4-one moiety is described. Their in vitro antibacterial activities against both Gram-positive and Gram negative bacteria are reported and the effect of the substituent on the bicyclic ring was investigated and was in agreement with findings from our previous studies.
OPTICAL ACTIVITY OF LACTONES AND LACTAMS-IV CHIROPTICAL PROPERTIES OF 4-IMIDAZOLIDINONES
Polonski, T.
, p. 611 - 616 (2007/10/02)
The chiroptical properties of 4-imidazolidinones are reviewed.Several optically active compounds were obtained from amides and N-methylamides of corresponding N-acylamino acids.The origin of the two lowest energy electronic transitions is considered.The e