RESULTS Estrogen 3-methyl ether was obtained with high yield.
结果以高收率合成了目的化合物。
OBJECTIVE To improve the preparation of estrogen 3-methyl ether.
目的改进雌激素类化合物3位酚羟基的甲醚化工艺。
In this paper, the cedrol methyl ether was synthesized by sodamide method.
本文采用氨基钠法合成甲基柏木醚。
Researches in propanediol methyl ether synthesis catalysts were reviewed in this paper.
综述了丙二醇甲醚合成催化剂研究的最新进展。
This article introduces the new purification process for methanol-methyl ether and the process indexes.
介绍了双甲精制新工艺的流程及工艺指标等。
Application of oleanane-28-carboxylic methyl ether-2, 11, 13 (18) -triene in preparing medicament for treating skin diseases.
齐墩果烷- 28 -羧酸甲酯- 2,11,13(18)-三烯在制备治疗皮肤疾病药物中的应用。
Original producing o(p) -nitrophenyl methyl ether methods are batch process with long cycle, high energy consumption and low efficiency.
生产邻（对）硝基苯甲醚的传统方法都是间歇法操作，周期长、能耗高、效率低。
The etherification of isoamylenes and methanol to form tert all methyl ether (TAME) by benz-sulfonic acid cation exchange resin as catalyst, was studied.
研究了苯磺酸型树脂催化的异戊烯和甲醇的醚化，考查了温度、醇烯比和空速对反应的影响。
Sodium bisulfate was used as the catalyst for esterification of ethylene glycol mono-methyl ether and acetic acid to ethylene glycol monomethyl ether acetate.
将硫酸氢钠作为由乙二醇单甲醚和乙酸酯化合成乙二醇单甲醚乙酸酯的催化剂。
The comb copolymer brushes were subsequently prepared via surface-initiated atom transfer radical polymerization of poly (ethylene glycol) methyl ether methacrylate (PEGMA).
紧接着，表面引发甲基丙烯酸聚乙二醇酯(PEGMA)原子转移自由基聚合制备梳型聚合物刷。
The fir essential oil was extracted from fir root by steam distillation method, from which cedrol was extracted, and then, cedrol methyl ether was synthesized based on cedrol.
以杉木根为原料通过水蒸气蒸馏法提取杉木精油，从杉木根精油中精制提取柏木脑，再以柏木脑为原料合成甲基柏木醚。
A new process has been developed to synthesize p-aminophenol methyl ether from p-nitrophenol methyl ether by catalytic hydrogenation, using ammonia synthesis gas instead of pure hydrogen.
采用合成氨厂氨合成气代替纯氢气催化氢化邻硝基苯甲醚合成邻氨基苯甲醚的新工艺，探讨了合成反应条件对邻氨基苯甲醚收率的影响规律。
A new process has been developed to synthesize p-aminophenol methyl ether from p-nitrophenol methyl ether by catalytic hydrogenation, using ammonia synthesis gas instead of pure hydrogen.
采用合成氨厂氨合成气代替纯氢气催化氢化邻硝基苯甲醚合成邻氨基苯甲醚的新工艺，探讨了合成反应条件对邻氨基苯甲醚收率的影响规律。
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