Sl. Wu et al., DIRECT ENANTIOMERIC RESOLUTION OF RACEMIC MU-FCCCHCOW(CO)(5)(CPCOOC2H5) USING AMYLOPECTIN TRIS(PHENYLCARBAMATE) CHIRAL STATIONARY BY HPLC, Gaodeng xuexiao huaxue xuebao, 19(9), 1998, pp. 1397-1400
Amylopectin tris(phenylcarbamate) was synthesized and used as the chir
al stationary phase upon adsorbed over silica gel, For this purpose, a
mylopectin was allowed to react with an excess of phenylisocyanate in
pyridine for 48 h, The carbamate was dissolved and adsorbed on silica
gel which had been treated with 3-aminopropyltriethoxysilane. The weig
ht ratio of the carbamate to the silica gel was 0. 45 : 2. 55. The rac
emic mu-FcC=CHCoW(CO)(5)(CpCOOC2H5) prepared from mu-FcC=HCo2(CO)(6) a
nd (C2H5OOCCp)W(CO)(3)Na was resolved on this chiral stationary phase,
Separation was carried out at room temperature, and methanol was used
as the eluent at a flow rate of 0. 5 mL/min.