Tripod-Tripod Coupling of Triazides with Triphosphanes. The Synthesis, Characterization, and Stability in Solution of New Cage Compounds: Chiral Macrobicyclic Triphosphazides
Dimerization of tris(o-ureidobenzyl)amines: a novel class of aggregates
作者:Mateo Alajarín、Antonia López-Lázaro、Aurelia Pastor、Paul D. Prince、Jonathan W. Steed、Ryuichi Arakawa
DOI:10.1039/b007955n
日期:——
Dimeric aggregates are formed by the assembly of two tripodal
moieties which are held together, both in solution and in the solid state,
by a belt of 6 hydrogen-bonded urea functions.
Synthetic applications of bis(iminophosphoranes). One-pot preparation of rigid bicyclic guanidines
作者:Pedro Molina、Mateo Alajarin、Angel Vidal
DOI:10.1021/jo00059a015
日期:1993.3
A one-pot synthesis of [6 + 6], [6 + 7], and [6 + 8] bicyclic guanidines based on a new method of dihydropyrimido annelation, which involves reaction of bis(iminophosphoranes) with aryl isocyanates or isothiocyanates is described. The method is also applicable for the preparation of chiral bicyclic guanidines.
作者:C. Foces-Foces、A. L. Llamas-Saiz、M. Alajarín、A. López-Lázaro、P. Molina
DOI:10.1107/s0108270198013857
日期:1999.3.15
The structures of tris(2-aminobenzyl)amine, C21H24N4, (I), and methyltris[2-(triethoxyphosphoranylidene-amino)benzyl]ammonium tetrafluoroborate, C40H66N4O9P3+. BF4-, (II), have been determined at room temperature and at 150 K, respectively. To our knowledge, this is the first time that a tris(phosphiteimine) compound such as (II) has been described. In (I), all NH2 groups are involved in weak N-H ... N intramolecular hydrogen bonding: two of them act as both donor and acceptor and are responsible for the formation of chains along the a axis.
New Cage Compounds: Preparation and Characterization of ChiralC3-Symmetric Macrobicyclic Tris(phosphazides)