Apparatus for microdetermination of alkoxyl groups 烷氧基团微量测定用仪器
2.
A series of triarylphosphine ligands with alkoxyl groups have been prepared through five steps from commercially available 3 - bromophenol by a new synthetic route 摘要从间溴苯酚出发，利用新的合成方法经五步反应合成了一系列具有不同烷氧基的芳基膦配体。
3.
A super acylation catalyst , 4 - dimethylamino pyridine ( dmap ) , was prepared and used to synthesize cholesteryl ester compounds . four kinds of cholesteryl ester compounds such as cholesteryl p - alkoxyl benzoate , cholesteryl dicarboxylate , cholesteryl lumequeic ester and coattail - like cholesteryl ester were synthesized by acylation method and super acylation catalyst method . chemical structures and liquid crystal behaviors of the synthesized samples have been characterized by using element analysis , ftir , dsc and polarized microscopy with a hot stage 本文合成了高效酰化催化剂4 -二甲基氨基吡啶( 4 - dimethylaminopyridine ， dmap ) ，采用酰氯化法和高效酰化催化剂法分别合成了对烷氧基苯甲酸胆甾醇酯、对称脂族二羧酸胆甾醇酯、烯酸胆甾醇酯及燕尾型胆甾醇酯四类胆甾醇酯衍生物，并进行了化学结构和液晶性能的表征。
