A study on starch etherification with 2 - chloroethanol 氯乙醇醚化反應(yīng)的研究
Effect of reaction temperature on etherification of light fcc gasoline 反應(yīng)溫度對輕汽油醚化過程的影響
Determination of degree of etherification of sodium carboxymethylcellulose for detergents 洗滌劑用羧甲基纖維素鈉醚化度的測定
Etherification of light fcc gasoline over supported tungstophosphoric heteropolyacid catalyst 采用負(fù)載型磷鎢酸催化劑的輕汽油醚化
It is required to add some water to wash the oil in the material after etherification reaction 酯化反應(yīng)結(jié)束后需加入一定比例的水,對物料進(jìn)行洗油。
Conclusion this facile etherification procedure is superior to other methods , due to its simplicity , the used of cheap reagents and excellent yield 結(jié)論該工藝操作簡便、試劑價廉易得、產(chǎn)率高,實現(xiàn)了對原有工藝的改進(jìn)。
Beginning with fluorobenzaldehyde , cyfluthrin was synthesized by bromination , acetalation , etherification , hydrolysis , and esterification , with a total yield of 45 % 以對氟苯甲醛為起始原料,經(jīng)過溴化、縮醛化、醚化、水解、酯化合成氟氯氰菊酯,總收率45 % 。
Using refined cotton , chloroacetic acid , sodium hydroxide and hydrogen peroxide as main feedstock , sodium carboxymethyl cellulose was made by the process of basification , etherification , abstersion and drying 摘要以精制棉、氯乙酸、氫氧化鈉和過氧化氫為原料,經(jīng)過堿化、醚化、洗滌、干燥,制得羧甲基纖維素鈉。
Soluble in water and many organic solvent , owning good lubricity and thermal stability , almost having no toxicity and excitability , being able to occur esterification reaction and etherification reaction with other compounds 能溶于水和多種有機溶劑,有優(yōu)越的潤滑性及熱穩(wěn)定性,幾乎沒有毒性和刺激性,可與其他化合物起酯化、醚化反應(yīng)。
Methods atomoxetine hydrochloride was synthesized using 3 - phenyipropanol as the starting material via six steps , such as chlorination , bromination , etherification , substitution , separation of levorotary isomer and acidification by gaseous hydrogen chloride 方法以1 -苯丙醇為起始原料,經(jīng)氯代、溴代、醚化、胺化、拆分、氯化氫成鹽6步反應(yīng)合成鹽酸托莫西汀。