Triphenylcarbamate

Triphenylbismuth dichloride, 4 33 Triphenylbismuth difluoride, 4 27 Triphenylbismuth dimethacrylate, 4 33 Triphenylbismuthine, 4 26 Triphenylbismuth iodide isocyanate, 4 32 Triphenylbismuth iodide azide, 4 32 Triphenylbismuth oxide, 4 32 Triphenylcarbamate... [Pg.973]

The effect of substituents on the phenyl groups of cellulose tribenzoate has been studied [17]. Cellulose triphenylcarbamate derivatives are the most thoroughly investigated polysaccharide phases with respect to chiral resolution and its... [Pg.38]

The triester and triphenylcarbamate derivatives of amylose were prepared as in the case of cellulose, but the triester derivatives of amylose are not useful for chiral resolution. Therefore, the triester derivatives of amylose have not been studied extensively. The chemical structures of the triphenylcarbamate derivatives are shown in Fig. 3. Similarly, the chiral resolution power of amylose derivatives was studied by introducing electron-donating and electron-withdrawing groups on the phenyl ring of the amylose derivatives [21-24],... [Pg.39]

FIGURE 24 Optimized structure (left) and possible interaction sites (right) of a cellulose triphenylcarbamate derivative. (From Ref. 32.)... [Pg.85]

Okamoto, Y., Kawashima, M., Aburatani, R., Hatada, K., Nishiyama, T., and Masuda, M. (1986) Optical resolution of p-blockers by HPLC on cellulose triphenylcarbamate derivatives, Chem. Lett., 1237-2140. [Pg.320]

Cellulose carbamate and its derivatives are able to immobilize enzymes easily with the help of dialdehydes such as dialdehyde starch, glutaraldehyde, and glyoxal [62]. Since cellulose triphenylcarbamate or tricarbanilate prepared... [Pg.106]

C2-, Cg-, Cjg-, and phenyl-modified silica cellulose triacetate and triphenylcarbamate... [Pg.1637]

Cellulose, cellulose triacetate, tribenzoate, and triphenylcarbamate silanized silica gel impregnated with the copper(n) complex of (25,4/ ,2 / 5)-A-(2 -hydroxydodecyl)-4-hydrDxyptDline (CHIRALPLATE, HPTLC CHIR) molecular imprinting polymers (MIPs)... [Pg.2199]

Cellulose triphenylcarbamate / right 2-pentanone,methyl ethyl ketone, methyl ethyl ketone / 2-pentanone... [Pg.366]

Cellulose triphenylcarbamate / left diethylene glycol monoethyl ether, methyl acetoacetate... [Pg.366]

Cl-cellulose triphenylcarbamate / right diethylene glycol monoethyl ether... [Pg.366]

Cellulose triphenylcarbamate / 3C1- cellulose triphenylcarbamate / left -> right triethylene glycol monomethyl ether... [Pg.366]

Methyl, 3-methoxy, 3-fluoro, 3-chloro, 3-CFj - cellulose triphenylcarbamate / right different solvents... [Pg.366]

Chloro - cellulose triphenylcarbamate / right different solvents... [Pg.366]

Regio- selectively substituted cellulose triphenylcarbamate - in 2,3,6 position along the chain meta position at the phenyl ring with Cl, methyl, H / left or right ethylene glycol monomethyl ether acetate... [Pg.366]

Okamoto Y, Kawashima M, Hatada K (1986) Controlled chiral recognition of cellulose triphenylcarbamate derivatives supported on silica gel. J Chromatogr 363 173-186... [Pg.51]

Fig. 2 (a) Optimized structure of cellulose triphenylcarbamate. (b) Possible interaction sites accounted for chiral recognition on cellulose triphenylcarbamate CSPs (adapted from [13])... [Pg.160]

Cellulose triphenylcarbamates were widely used to separate a large number of enantiomers in column chromatography [34,35], and only recently these CSPs were applied in planar chromatography. [Pg.91]

Preparation of the previously cited triphenylcarbamates was carried out by reaction of microcrystalline cellulose with the specific phenyl isocyanate in pyridine at 120°C for 6 h, according to the procedure reported by Okamoto et al. [34]. Each product was washed with methanol to remove the unreacted isocyanate. [Pg.91]

As far as the cellulose triphenylcarbamate (CTPC) or amylose triphenylcar-bamate (ATPC) is considered, the important sites are the polar carbamate groups. CTPC exhibits a left-handed threefold helix and glucose residues are regularly... [Pg.187]

Booth and Wainer [50] have demonstrated the role of multiple hydrogenbonding interactions in the stability of the diastereomeric complex occurring throughout conformational changes of both ATPC chiral selector and solute. Authors pointed out in this study that chiral recognition does not fit a three-point interaction mechanism. Other aspects of chiral separation mechanisms on polysaccharide triphenylcarbamate derivatives have been recently reviewed by Yamamoto andOkamoto [51],... [Pg.188]

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