3,3 -Iminobis

A few 5-imino- and 5,5 -iminobis(3-pyrazolines) are listed in Table XV. These are prepared by reaction of the appropriate chloropyrazole methiodide with ammonia.991... 

COLORPHOTOGRAPHY, INSTANp (Vol 6) N,Np[iminobis(9,10-dihydro-9,10-dioxo-4,l-anthracenediyl)]bis-benzamide [128-79-0]... 

It seems reasonable to believe that this problem could be overcome by studying more coordinating ligands with the same structural features. Very recently, it has been demonstrated [56] that the use of iminobis(oxazolines) (Fig. 18) leads to better enantioselectivities and recoverable catalysts, both with laponite and nalion-silica supports (Table 8). Theoretical calculations are consistent with the stronger coordinating ability of iminobis(oxazolines) being the origin of these results [57]. 

Fig. 18 Chiral iminobis(oxazoline) ligands used for immobilization...

Phosphonic acid analogues of aspartic acid, glutamicacid C-benzy1g1ycine,191 and the phosphor inane (70)1 92 have been studied, also the oxime (71)193 a phosphonopiperidinol - with a very distorted chair structure,194 the phosphonate (72),195 a pyrazole,196 a thiocarbamoy1phosphonate, 97 and two iminobis-(methylphosphonic acids).198 Additionally there have been studies of the new bicyclic sulphur heterocycle (73),199 the oxazaphospho1idine (74)200 and a triaminophosphetanium aluminium betaine.201... 

A l,5,7-triazabicyclo[4.4.0]dec-5-ene containing a bicyclic guanidine system was obtained from a 4,4 -iminobis(butan-2-ylamine) and NJV -thiocarbonyldiimidazole [ 125]... 

A template synthesis employing Ni(OAc)2, 2,5-dihydroxy-2,5-dimethyl-1,4-dithiane, and 3,3 -iminobis(propylamine) gave the water-soluble five-coordinate complex [Ni(495)], the crystal structure of which shows trigonal bipyramidal coordination of Ni11 with the central amine and terminal thiolates in plane and the two imino nitrogens in axial positions. Solvatochromism of the complex is interpreted in terms of S" H bonding, which may be of relevance to the catalytic cycle in hydrogenases.1341... 

D. Zanini and R. Roy, Novel dendritic x-sialosides Synthesis of glycodendrimers based on a 3,3 -iminobis(propylamine) core, /. Org. Chem., 61 (1996) 7348-7354. 

Zeheb, R., Chang, V., and Orr, G.A. (1983) An analytical method for the selective retrieval of iminobi-otin-derivatized plasma membrane proteins. Anal. Biochem. 129, 156-161. 

Figure 12 Common coordination modes for iminobis(diorganophosphine chalcogenide)s and dichalcogenoimidodiphosph(in) ates...

Essentially the same mechanism was proposed for the [CuI(FLA) (PPh3)] (127) and [Cun(FLA)(IDPA)]+ (IDPA = 3,3 -iminobis(Al,Al-di-methylpropylamine) (128) catalyzed reactions. In the former case, composite kinetic features were found in the initial phase of the reaction indicating a slow transformation of the complex presumably to the same catalytically active species which was postulated in the Cu(FLA)2 system. 

A number of pendant arm ligand derivatives based on hexamine macrocyclic backbones have been reported." One such species was formed by the [2 -f 2] Schiff base condensation between 3,3-iminobis(propylamine) and diformyl-p-cresol followed by sodium borohydride reduction of the four imine functions so generated. Potentiometric studies indicate that a range of both mononuclear and dinuclear species are formed in solution with manganese(II) incorporating various both protonated and nonprotonated forms of the ligand. 

H2saldien bis(salicylidene)diethylenetriamine 2,2 -[iminobis(ethane-1,2-diylnitrilo-methylidyne)]diphenol... 

Chem. Abstr. Serv. Reg. No. 111-42-2 Deleted CAS Reg. No. 8033-73-6 Chem. Abstr. Name 2,2 -Iminobis[ethanol] lUPAC Systematic Name 2,2 -Iminodiethanol... 

M-----N interactions are known including [iminobis(ethyleneoxy)]diphenylsilane (80), 474 sila-... 

Interest in the coupling of polyaminopolycarboxylic acids to macromolecules for use in nuclear medicine resulted in the synthesis of l-(p-aminophenyl)-ethylenediaminetet-raacetic acid (10, n = 0, R=NH2, pAPhEDTA). Since its first synthesis there have been improvements in its synthesis105 as well as the synthesis of related chelating agents (10, n = 2)106, (ll)107 and (12)108. In a search for a lipophilic chelator which could be incorporated into the lipid phase of liposomes, Bard et al.109 synthesized 3-cholesteryl 6-[N -iminobis(ethylenenitrilo)-tetraacetic acidjhexylether (13). 

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