Aza-Michael Addition Reactions of Hydrazones with Activated Alkynes Catalyzed by Nitrogen-Containing Organic Bases
作者:Zhi-Liang Yuan、Yin Wei、Min Shi
DOI:10.1002/ejoc.201000365
日期:2010.7
2]-octane)-catalyzed Michael-type reactions of hydrazones with activatedalkynes are described in this paper. This aza-Michaeladditionreaction can be applied to different types of hydrazones, such as hydrazones 1 and hydroxy-bearing hydrazones 5. The corresponding adducts are achieved in high yields under mild reaction conditions. DABCO-promoted aza-Michaeladditionreactions were successfully applied to
Le Corre,M., Comptes Rendus des Seances de l'Academie des Sciences, Serie C: Sciences Chimiques, 1973, vol. 276, p. 963 - 966
作者:Le Corre,M.
DOI:——
日期:——
Interesting presentation of a retained upper deciduous incisor with apical fenestration
作者:M. Edney
DOI:10.1038/sj.bdj.4800483a
日期:2000.4.8
A case is described where intrusion of a primary incisor resulting in apical fenestration may have occurred secondary to occlusal forces. The effects on the permanent dentition and possible aetiological factors are discussed.
Kolind -Andersen,H. et al., Bulletin des Societes Chimiques Belges, 1975, vol. 84, p. 341 - 360