Ligands for the alkali metals. Part 3. Further examples of nitrogen-containing ‘crown’ compounds

Macrocyclic host cyclophosphazenes from aminolysis of N3P3CI6 by bis-(2-ortho-aminophenoxyethyl)ether

“…The results reported here, in conjunction with earlier studies of similar systems [19][20][21][22][23][24][25][26], indicate that the reactions of long-chain oxodiamines with N 3 P 3 Cl 6 lead to macrocyclic host molecules, whose conformation, cavity size, and number of co-ordination sites depend drastically on experimental conditions. These cyclophosphazenic cryptands offer potential for design to act as selective anticancer agents or as catalysts.…”

“…Oxodiamine (1) was prepared by the literature method [21]. IR spectra were obtained using a Shimadzu 470 spectrophotometer.…”

New trends in the chemistry of condensed heteromacrocycles part B: Macrocyclic formazans

“…The nitro group has been used successfully as an amine precursor in the preparation of crown formazans. Thus, 2-nitrophenol (8) is treated with diethylene glycol dihalides 9 a n d K 2 CO 3 in DMF [28,29]. The resulting dinitro derivative 1 0 is subsequently reduced with stannous chloride and acid to give the diamine 11 (Scheme 1).…”

New Trends in the Chemistry of Condensed Heteromacrocycles. Part B. Macrocyclic Formazans

“…The nitro group has been used successfully as an amine precursor in the preparation of crown formazans. Thus, 2-nitrophenol (8) is treated with diethylene glycol dihalides 9 a n d K 2 CO 3 in DMF [28,29]. The resulting dinitro derivative 1 0 is subsequently reduced with stannous chloride and acid to give the diamine 11 (Scheme 1).…”