found that the hydroxyl on the surface of [Al.sub.2][O.sub.3] can adsorb carbonyl sulfide and the intermediate product is thiocarbonate which will decompose rapidly into hydrogen sulfide and carbon dioxide.
By studying the oxygen toxicity mechanism of catalyst, they found that the hydroxyl on the surface of the catalyst plays an important role in the hydrolysis and the intermediate product is thiocarbonate. They reported that the reaction mechanism of COS on mineral oxides can be summarized as shown in Figure 3.
Hydrogen thiocarbonate (HSC[O.sup.-.sub.2], HTC) was proposed to be the crucial intermediate for both the oxidation and the hydrolysis pathway 24-27, 80].
He, "Experimental and theoretical study of hydrogen thiocarbonate for heterogeneous reaction of carbonyl sulfide on magnesium oxide," Journal of Physical Chemistry A, vol.
The alternating copolymer obtained was terminated with thiocarbonate group and can be used as macro-RAFT agent and continue to form the diblock copolymer [26-28].
A rapid equilibrium between chain radical and dormant chain containing thiocarbonate group is established.
To investigate whether the thiocarbonate end group was homogeneously distributed throughout the distribution, a dual RI and UV detector system (The UV detector was set at 254 nm, which corresponded to the UV absorption wavelength of the thiocarbonate RAFT agent) was used for GPC.
Nanda, "Stereoselective synthesis of thiazino[4,3-: A] indolesusingthethia-Pictet-Spenglerreaction of indoles bearing N -tethered thiols and vinylogous thiocarbonates
," Organic & Biomolecular Chemistry, vol.