- Novel spirodecenol compound and preparation method thereof
-
The invention discloses a novel spirodecenol compound and a preparation method thereof, and belongs to the technical field of pesticide synthesis. The invention adopts the key point that the novel spirodecenol compound has a structure as described in the specification. The invention also discloses a novel spirodecenol compound and a preparation method thereof. According to the invention, a novel spirodecenol compound is synthesized by a new method, a reaction process is simple and easy to operate, raw materials are cheap and easy to obtain, the reaction efficiency is high, the repeatability isgood, the insecticidal activity effect is obvious, and the spirodecenol compound has a good application prospect.
- -
-
Paragraph 0024; 0025
(2018/05/16)
-
- Preparation method and application of novel aminoazaheterocycles compound
-
The invention discloses a preparation method and application of a novel aminoazaheterocycles compound, and belongs to the technical field of applied chemistry. The technical scheme disclosed by the invention is characterized in that the novel aminoazaheterocycles compound has a following structure: a formula shown in the description. The invention further discloses the preparation method of the novel aminoazaheterocycles compound. The novel aminoazaheterocycles compound is synthesized through a new method; a reaction process is simple to operate and feasible, and raw materials are cheap and easy to obtain; the reaction efficiency is relatively high, and the repeatability is relatively good; the insecticidal activity effect is obvious.
- -
-
Paragraph 0023; 0026; 0027
(2018/04/03)
-
- Novel triazole methyl ester compound and preparation method thereof
-
The invention discloses a novel triazole methyl ester compound and a preparation method thereof, and belongs to the technical field of application chemistry. The invention adopts a key point that thenovel triazole methyl ester compound has a structure as described in the specification. The invention also discloses a novel triazole methyl ester compound and a preparation method thereof. Accordingto the invention, a novel triazole methyl ester compound is synthesized by a new method, a reaction process is simple and easy to operate, raw materials are cheap and easy to obtain, the reaction efficiency is high, the repeatability is good, and the insecticidal activity effect is obvious.
- -
-
Paragraph 0032; 0033; 0035; 0037
(2018/05/16)
-
- Novel preparation method of spirotetramat
-
The invention discloses a novel preparation method of spirotetramat and belongs to the technical field of pesticide syntyesis. The key point of the technical scheme is as follows: the method is characterized by carrying out cyclization reaction via 1-amin
- -
-
Paragraph 0022-0023
(2018/04/21)
-
- Ruthenium-Na2CO3-catalyzed one-pot synthesis of ring-hydrogenated carbamates from aromatic amines and organic carbonates under H2
-
A facile and efficient one-pot procedure for the synthesis of ring hydrogenated carbamates from aromatic amine and alkylene carbonate under H2 gas pressure has been developed using a heterogeneous catalyst system comprising ruthenium and alkali metal carbonates. The effects of temperature, H2 pressure, catalyst (types of loaded metal and their supports), molar ratio of substrate/catalyst, and solvent were also investigated. Among the alkali metal carbonates, the sodium carbonate was found as best promoter for nucleophilic attack and ring-opening (NARO) reaction and thus increased the yield of ring hydrogenated carbamate up to 88% when using Ru/C as ring hydrogenation (RH) catalyst. This catalyst system could be reused at least five times without signi?cant loss of activity, which makes this process cost-effective and eco-friendly.
- Cho, Jin Ku,Kim, Hoon Sik,Kim, Yong Jin,Mishra, Vivek,Shin, Seung-Han,Suh, Young-Woong
-
-
- A modified Curtius reaction: an efficient and simple method for direct isolation of free amine
-
The Curtius rearrangement and related reactions are often used to convert carboxylic acids to the corresponding primary amines. However, this reaction often requires harsh conditions for hydrolysis of the isocyanate intermediates to amines, and can also be contaminated by the formation of corresponding ureas due to the reactive nature of the intermediates. We have discovered that by quenching the isocyanate intermediates with sodium trimethylsilanolate, the free amines can be isolated after aqueous workup. This mild and fast procedure provides free amines in one pot with good yields.
- Ma, Bin,Lee, Wen-Cherng
-
experimental part
p. 385 - 386
(2010/03/03)
-
- Tetrahydroindole and Tetrahydroindazole Derivatives
-
The invention provides indole and indazole compounds of Formula (I) or pharmaceutically acceptable salts thereof which are useful for treating and/or preventing diseases and/or disorders ameliorated by the inhibition of Heat-Shock Protein 90. The invention further provides pharmaceutical compositions comprising compounds of Formula (I) and methods of preparing compounds of Formula (I).
- -
-
Page/Page column 33
(2008/12/04)
-