The greatest yield in the synthesis of diaziridines from carbonyl compounds, amines, and aminating reagents in water is achieved at a specific pH, which shifts to less alkaline values with increasing -I effect of the substituents in the carbonyl compound and with decreasing pK(BH+) value of the amine. The role of pH is related to the conditions for the generation of an immonium from the intermediate alpha-aminocarbinol. The nuclear Overhauser effect was used to determine the orientation of the substituents in several diastereomers of the didikyldiaziridines obtained.
作者:A. A. Dudinskaya、A. E. Bova、L. I. Khmel'nitskii、S. S. Novikov
DOI:10.1007/bf00857403
日期:1971.7
[EN] AGENTS FOR TREATING NEURODEGENERATIVE DISORDERS<br/>[FR] AGENTS POUR LE TRAITEMENT DE MALADIES NEURODÉGÉNÉRATIVES
申请人:CRO CONSULTING LTD
公开号:WO2013121334A3
公开(公告)日:2013-10-31
The role of pH in the synthesis of diaziridines
作者:V. V. Kuznetsov、N. N. Makhova、Yu. A. Strelenko、L. I. Khmel'nitskii
DOI:10.1007/bf00959732
日期:1991.12
The greatest yield in the synthesis of diaziridines from carbonyl compounds, amines, and aminating reagents in water is achieved at a specific pH, which shifts to less alkaline values with increasing -I effect of the substituents in the carbonyl compound and with decreasing pK(BH+) value of the amine. The role of pH is related to the conditions for the generation of an immonium from the intermediate alpha-aminocarbinol. The nuclear Overhauser effect was used to determine the orientation of the substituents in several diastereomers of the didikyldiaziridines obtained.