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- The synthesis of styralyl propionate can be achieved by microwave with ferric chloride and p toluenesulfonic acid as the catalysts. 报道以三氯化铁、对甲苯磺酸为催化剂,在微波辐射下合成丙酸苏合香酯。
- Triarylmethane structure polymer can be prepared from pyrene, phenol respective, and bezaldehyde as cross linking agent in the presence of p toluenesulfonic acid catalyst. 分别以芘、苯酚为原料，以苯甲醛为交联剂，对甲基苯磺酸为催化剂合成出具有三芳基甲烷结构的聚合物。
- Benzaldehyde(0.049mol) was treated with isopropylthiol(12mL) in the presence of p toluenesulfonic acid (3mmol) to give 84.9% benzaldehyde isopropyl mercaptal. 苯甲醛和异丙硫醇在对甲苯磺酸催化下发生反应，合成相应的缩硫醛，产率达84．9%25。
- The research was concentrated on the co catalysis effect and the related catalytic mechanism of strong acids,such as amino sulfonic acid, p toluenesulfonic acid and fluoroboric acid. 研究了氨基磺酸、氟硼酸及对甲苯磺酸的助催化作用,并探讨了其催化机理。
- p-Anisaldehyde was treated with isopropylthiol in the presence of p toluenesulfonic acid to give p anisaldehyde isopropyl mercaptal with 84.9% yield. 茴香醛和异丙硫醇在对甲苯磺酸催化下发生反应;合成了相应的缩硫醛;产率达84.;9%25。
- p-Anisaldehyde was treated with isopropylthiol in the presence of p toluenesulfonic acid to give p anisaldehyde isopropyl mercaptal with 84. 茴香醛和异丙硫醇在对甲苯磺酸催化下发生反应;合成了相应的缩硫醛;产率达84.;9%25。
- p toluenesulfonic acid 对甲苯磺酸
- The n butyl gallate was synthesized by esterification of butyl alcohol and gallic acid in catalysis of p methyl toluenesulfonic acid (PTSA) induced by microwaves. 采用微波辐射技术，以对甲苯磺酸（PTSA）作催化剂，没食子酸和正丁醇直接酯化合成没食子酸正丁酯。
- Purpose To prepare trenbolone acetate in five steps from estra 4,9 diene 3,17 dione. Methods Estra 4,9 diene 3,17 dione(1) was treated with methanol in the presenece of p? toluenesulfonic acid to give 3,3? 目的 由雌甾 4,9 二烯 3 ,1 7 二酮 (1 )经五步合成醋酸群勃龙 (6)。
- p - toluenesulfonic acid of catalyst 对甲苯磺酸
- He gave me a taste of his acid wit. 他让我尝到了他敏锐尖刻之机智的滋味。
- Acid irritates the stomach lining. 酸能刺激胃黏膜。
- Acid had pitted the surface of the silver. 酸把银器的表面腐蚀了。
- I mind my p's and q's whenever I see him. 每当我见到他我都谨慎行事。
- In English, b, p, m and w are bilabials. 英语中的b、p、m、w为双唇音。
- I am doing an experiment of neutralizing acid. 我在做一个中和酸的实验。
- Can Jones beat Smith? That's the acid test. 琼斯能击败史密斯吗？那是个严峻的考验。
- AB and CD intersect at (the point) P. AB线和CD线在P点相交。
- Catalytic Synthesis of Tributyl Citrate by Activated Carbon Supported Para - toluenesulfonic Acid 活性炭固载对甲苯磺酸催化合成柠檬酸三丁酯
- The time now is 10:00 p, m, sharp. 现在的时间是晚上10点整。
