5131-59-9Relevant articles and documents
Fine tuning of receptor polarity for the development of selective naked eye anion receptor
Park, Jin Joo,Kim, Young-Hee,Kim, Cheal,Kang, Jongmin
experimental part, p. 3361 - 3366 (2011/06/28)
We designed and synthesized new anion receptors 1, 2, and 3, which have different N-H polarity. According to their N-H polarities, these receptors showed different selectivities for the anions they were interacting with. The difference of selectivity coul
Heterocycles from Heterocycles. 1,3-Diaryl-4,5-imidazolidinediones from 1,3,5-Triarylhexahydro-1,3,5-triazines and Oxalyl Chloride
Verardo, Giancarlo,Giumanini, Angelo G.,Gorassini, Fausto,Tolazzi, Marilena,Strazzolini, Paolo
, p. 10609 - 10628 (2007/10/02)
1,3-Diaryl-4,5-imidazolidinediones (6) are easily synthesized from 1,3,5-triarylhexahydro-1,3,5-triazines (1) and oxalyl chloride (5) in a reaction not likely to involve the zwitterionic intermediate (3) of the N-methylenearylamine dimer, but viewing the sequential pick up of two units of the monomer (2) by oxalyl chloride (5).The essential role of ethyl alcohol added to the reaction mixture is recognized.Reaction conditions have been optimized and some ten imidazolidinediones (6) were prepared in good to excellent yields.Geometric parameters of 6 were obtained by X-ray diffraction analysis: all the nuclei are found almost in one plane except for a small twist of the phenyl rings about the C-N bond.