The invention is related to preparation process of 1,2-diketone monoketal which is flashing agent of ultraviolet light.
一种制备芳香族1，2一二酮的单缩酮的方法，属于紫外光引发剂技术领域。
In this paper, the one-pot reaction of aqueous titanium trichloride with o-nitroaniline and 1, 2-diketone compounds in basic media was studied.
研究三氯化钛存在下邻硝基苯胺与1,2 -二酮在碱性介质中一锅反应，快速方便、高收率地合成了一系列取代喹喔啉化合物。
The synthetic method is simple and convenient and direct; and the spiral ring skeleton obtained from spiro-diketone has optical pure chiral ligand with different absolute configurations.
本发明的合成方法简便直接，从外消旋的螺环二酮出发得到螺环骨架具有不同绝对构型的光 学纯的手性配体。
Novel substituted 2, 4-thiazolidine diketone derivatives, method for preparation thereof and pharmaceutical compositions containing the same.
新型取代的2,4 -噻唑烷二酮衍生物，其制备方法以及含有它们的药物组合物。
The long-chain diketone described above was applied to the synthesis of macrocyclic ketone and a new method for macrocyclic ketone was reported.
本文还将长连二酮应用到大环单酮的合成当中，提出了一种大环单酮的新合成方法。
Novel synthetic methods for alkyl methyl ketone, symmetric diketone , long-chain diketone and macrocyclic ketone were provided.
利用二苯并咪唑盐与格利雅试剂的加成-水解反应，提出了长链二酮的新合成方法。
Results: Two mono-hydroxy intermediates were produced during the diketone reduction process and its reverse reaction, which were separated and structurally confirmed.
结果：两个单羟基中间产物产生在双羰基还原及其逆反应过程中，并被分离纯化和鉴定。
Methods: Referring to dienogest's construction features, we reconstructed anordrin be- ginning with diketone.
方法：以双酮为原料，结合双烯孕腈的药物结构特点对双炔失碳酯进行化学结构改造。
The invention discloses an anti-influenza virus prodrug which is a derivative related to 1, 3-pyrazine oxazine-2, 4 diketone with a chemical structural formula (I);
本发明公开了一种抗流感病毒前体药，是有关1，3-吡嗪并恶 嗪-2，4二酮的衍生物，其化学结构式为；
The invention discloses an anti-influenza virus prodrug which is a derivative related to 1, 3-pyrazine oxazine-2, 4 diketone with a chemical structural formula (I);
本发明公开了一种抗流感病毒前体药，是有关1，3-吡嗪并恶 嗪-2，4二酮的衍生物，其化学结构式为；
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