It'shows that the key step is the synthesis of 4-methyl-dihydro-furan-2, 3-dione.
研究结果表明关键步骤为原料4-甲基-2,3-呋喃二酮的合成。
The synthesis of 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) and its derivatives are briefly introduced, the current progresses on its development and application are also reviewed.
简要介绍了新型膦菲类阻燃剂9,10-二氢-9-氧杂-10-膦菲-10-氧化物(DOPO)及其衍生物的合成,综述了近年来国内外膦菲类阻燃剂的研究与应用进展情况。
Dihydro testosterone is also pronounced as DHT.
二氢睾酮也宣布为双氢睾酮。
A new flame retardant intermediate 9, 10 - dihydro - 9 - oxa - 10 - phosphaphenanthrene - 10 - oxide (DOP) was synthesized, and the appropriate synthesis conditions were studied.
合成了新型阻燃剂中间体9,10-二氢- 9 -氧杂-10 -磷杂菲- 10 -氧化物(DOP),并对适宜的合成条件进行实验研究。
This research main goal examines the factor in the understanding urine which sentences by mistake, and the understanding changes to the dihydro codein whether has the similar question.
本研究主要目的在了解尿检误判的因子,并了解改用二氢可待因是否有类似问题。
Dihydro-1, 3, 5-triazine amine derivatives and their therapeutic USES.
二氢- 1,3,5 -三嗪的含氨基衍生物及其治疗应用。
AIM To theoretically explore the mechanism of action of 5,6 diaryl 2,3 dihydro 1 pyrrolizinone derivatives.
目的探讨5 ,6二芳基2 ,3二氢1吡咯里嗪酮类化合物的作用机制。
The invention discloses a fiber softening conditioning agent, which is formed by mixing dihydro butter alkyl dimethyl ammonium chloride, lanolin alcohol, calcium chloride and water.
本发明公开了一种纤维柔软调理剂,由二氢化牛油烷基二甲基氯化铵、羊毛脂醇、氯化钙、水混合组成。
Effect of dimethyl 4 (2 chlorophenyl) 1,4 dihydro 2,6 dimethyl 3,5 pyridinedicarboxylate on the chronic pulmonary hypertension induced by monocrotaline in rats.
二甲基-4-(2-氯苯基)-1,4-二氢-3,5-吡啶二羧酸二甲酯对大鼠野百合碱性肺动脉高压的防治作用。
The invention relates to a new derivative of aryl dihydro naphthalenes lignan and the medical application of said compound.
本发明涉及一种新的芳基二氢萘类木脂素衍生物,本发明还涉及 该类化合物的医药用途。
From the reaction of 2,3 dihydro 2 methyl 4 phenyl 1,5 benzothiazepines with diazozcetic ester an unexpected ring open product of the intramolecular rearrangement was obtained.
二氢-2-甲基-4-苯基-1,5-苯并硫氮杂卓与重氮乙酸乙酯反应,得到非预期的分子内重排的开环产物。
The splitting method adopted for preparing single chiral 2-heterocycle substituted dihydro pyrimidine compounds has the product yield more than 20 percent and the optical purity above 98 percent;
采用本发明的拆分方法制备单一手性2-杂环取代的 二氢嘧啶化合物的产物收率为20%以上,光学纯度达98%以上;
The splitting method adopted for preparing single chiral 2-heterocycle substituted dihydro pyrimidine compounds has the product yield more than 20 percent and the optical purity above 98 percent;
采用本发明的拆分方法制备单一手性2-杂环取代的 二氢嘧啶化合物的产物收率为20%以上,光学纯度达98%以上;
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