5978-00-7Relevant academic research and scientific papers
An NMR study of the reactions of chlorophosphines with AlCl3. Phosphenium cations featuring a S-P-N linkage
Huang, Tian-Bao,Liu, Ling-Fei,Zhang, Jing-Ling,Xu, Xuang-Long,Huang, Wen-Fang,Chen, Ru-Yu,Wang, Ke,Yu, Xiao-Ming,Liu, Xiao-Peng
, p. 183 - 193 (2007/10/03)
The N-P+-S phosphenium cations 1, 2 and 3 have been prepared by treatment of the respective precursor chlorophosphines 4, 5 and 6 with the stoichiometric quantity of AlCl3 in CH2Cl2 solution. The cations 3 are n
Syntheses de β-sultames (thiazetidines-1,2 dioxyde-1,1)
Champseix, A.,Chanet, J.,Etienne, A.,Berre, A. Lemasson, J. C.,Napierala, C.,Vessiere, R.
, p. 463 - 472 (2007/10/02)
β-sultams (1,2-thiazetidine-1,1-dioxides) are easily prepared by 1-halogensulphonyl-2-aminoalkane cyclisation. Two processes based upon this principle have permitted the preparation of many variously N and C-substituted β-sultams. 1) In the first method 1-chlorosulphonyl-2-aminoalkane hydrochlorides, prepared from taurines or β-aminothiols, cyclised in the presence of base. 2) The second process involves the spontaneous cyclisation of 1-fluorosulphonyl-2-aminoalkanes prepared Michael addition of primary amines to 1-fluorosulphonylethene.
