An investigation of cassiterite flotation using mixed tolyl arsonic acid

混合 甲苯胂酸浮选锡石的研究

Study on synthetic technic of n - ( o - tolyl ) - thiourea

N- 邻 甲 苯基硫脲合成工艺研究

Synthesis of N - ( 4 - Chloro - 3 - tolyl ) - N ′ - methylurea

N-（4-氯-3-甲基 苯基）-N′-甲基脲的合成

Synthesis and Crystal Structure of N - ( p - tolyl ) - 3-hydroxy-2-ethyl-4-pyridinone

N－（p－ 甲苯 基）－3－羟基－2－乙基－ 4（ 1H）－吡啶酮的合成和晶体结构

It has been found that if the substituent Ar in ( i-Bu ) _2AlOAr is phenyl or tolyl the system will be significantly active .

试验结果发现，（i-Bu）2AlOAr中的Ar基为苯基或 甲苯 基时，体系具有较高的催化活性。