The corn starch was modified into oxidized starch containing both carboxyl and aldehydegroups by chemical method, which provided a new clean tanning agent for leather industry.
Various aryl triflates, bearing ketone or aldehydegroups, were evaluated for palladium-mediated introduction of an amino group at the triflate position in the presence of various phosphine ligands.
各种含有酮或醛的芳基三氟甲磺酸酯在催化量的钯和膦配体的存在下与胺或酰胺发生取代反应。
3
At the same time, some other oxycompound groups, such as carbonyl group, aldehyde group and ketone group, appear or increase with temperature rising.