Isopropyl p - hydroxybenzoate was synthesized with toluene - p - sulfonic acid as catalyst.是什么意思？

Isopropyl p - hydroxybenzoate was synthesized with toluene - p - sulfonic acid as catalyst.

以对 甲苯 磺酸为催化剂合成了尼泊金异丙酯.

isopropyl

n. 异丙基；

例句
Under the optimum condition the yield of isopropyl cyclopropane carboxylate is 92 %.
在最佳反应条件下,环丙烷羧酸异丙酯的产率达92%.

was

v. 用来表示某人或某物即主语本身，用来表示某人或某物属于某一群体或有某种性质（ be的过去式 ），在，存在，不受干扰；

例句
There was a terrible sadness in her eyes...
她眼神中流露出深深的悲伤。

synthesized

--

例句
Butyraldehyde 1,2 proparediol acetal was synthesized by using stannous chloride as catalyst.
以非质子酸氯化亚锡为催化剂,催化合成了丁醛-1,2-丙二醇缩醛.

with

prep. 和，跟，随着，关于，和…一致；

例句
A waiter entered with a tray...
侍者端着托盘进来了。

toluene

--

例句
Absorbed by solvent, butanone - toluene mixture was analyzed by gas chromatography ( GC ).
利用溶剂吸收采集丁酮甲苯混合组分,并用气相色谱 ( GC ) 测定.

acid

adj. 酸味的，尖刻的，酸的，酸性的；n. <化>酸，酸味物质；

例句
This comedy of contemporary manners is told with compassion and acid humour.
这部当代风尚喜剧杂糅了悲悯的情怀和尖酸的幽默。

as

adv. 同样地，一样地，例如；prep. 作为，以…的身份，如

例句
As far as I can recall, Patti was a Smith.
我记得帕蒂是姓史密斯的。

catalyst

n. <化>触媒，催化剂，〈比喻〉触发因素，促进因素，〈口〉有感染力的人；

例句
I very much hope that this case will prove to be a catalyst for change...
我非常希望这起事件能催生变革。