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。
Sodium bisulfate was used as the catalyst for esterification of ethylene glycol mono-methyl ether and acetic acid to ethylene glycol monomethyl ether acetate.
采用一步法合成以4 ，4 '-甲烷二环已基二异氰酸酯（HMDI）、扩链剂1，4 -丁二醇（BDO）为硬段，聚四氢呋喃醚（PTMG）为软段的脂肪族聚氨酯。
The one step method was adopted in this study to synthesize aliphatic polyurethane with 4,4 methylene dicyclohexyl diisocyanate(HMDI), 1,4 butanediol(BDO) and poly (tetrahydrofuran)(PTMG).
结果表明，在菝葜植物根茎中含有黄酮、黄酮醇、二氢黄酮、二氢黄酮醇等多种黄酮类化合物。
It was found that the roots of Smilax China L contained flavone, flavonol, dihydroflavone and dihydroflavonol etc.
通过卤过氧化物酶生物转化与化学步骤结合将茚定量转化为（1S，2R）-茚氧化物和（1S，2R）-二氢茚二醇的方法。
Quantitative conversion of indene to (1S, 2R) indene oxide and (1S, 2R)-indanpiol by combination of haloperoxidase bioconversion and chemical steps.
当聚四氢呋喃二醇与癸二醇的重量配比小于70/30时，共聚物具有明显的液晶性。
These polymers were found to be liquid crystalline when the feed ratio of poly(oxytetramethylene)glycol to 1,10-decanediol was less than 70 to 30.
报道了一系列衍生自9，10-二氢菲-9，10-二醇的新型手性配体设计、合成及在不对称催化反应中的应用。
A series of novel chiral ligands derived from (9,10)-dihydrophenanthrene-9,10-diol were designed , synthesized and applied in some asymmetric catalysis.
报道了一系列衍生自9，10-二氢菲-9，10-二醇的新型手性配体设计、合成及在不对称催化反应中的应用。
A series of novel chiral ligands derived from (9,10)-dihydrophenanthrene-9,10-diol were designed , synthesized and applied in some asymmetric catalysis.
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