The present disclosure relates to a method for preparing tolimidone on large scale with maintaining high purity and uniform particle size distribution, and more specifically, a method suitable for preparing tolimidone on industrially large scale by using tetrabutyl ammonium bromide catalyst and recrystallization in ethanol, which can prepare highly pure tolimidone in a time shorter than prior arts while maintaining water content and particle size distribution constantly.

The present disclosure relates to a method for preparing tolimidone on large scale with maintaining high purity and uniform particle size distribution, and more specifically, a method suitable for preparing tolimidone on industrially large scale by using tetrabutyl ammonium bromide catalyst and recrystallization in ethanol, which can prepare highly pure tolimidone in a time shorter than prior arts while maintaining water content and particle size distribution constantly.

The present invention relates to the preparation field of azoxystrobin, and discloses a preparation method for a compound represented by formula (I). The method comprises the following steps: (1) a compound represented by formula (II) is hydrolyzed in a solvent under acidic conditions to obtain a compound represented by formula (III); and (2) the compound represented by formula (III) is reacted with a base and a methylating agent to obtain the compound represented by formula (I); in the formula, R.sub.3 is hydrogen or C.sub.1-C.sub.4 alkyl, and R.sub.4 is C.sub.1-C.sub.4 alkyl. The process for preparing azoxystrobin of the present invention not only successfully replaces trimethyl orthoformate and reduces the raw material cost, but also has high total reaction yield, and is suitable for industrial large-scale production. Experiments have proven that the yield of the prepared azoxystrobin can reach 95%.

##STR00001##

The present invention relates to the preparation field of azoxystrobin, and discloses a preparation method for a compound represented by formula (I). The method comprises the following steps: (1) a compound represented by formula (II) is hydrolyzed in a solvent under acidic conditions to obtain a compound represented by formula (III); and (2) the compound represented by formula (III) is reacted with a base and a methylating agent to obtain the compound represented by formula (I); in the formula, R.sub.3 is hydrogen or C.sub.1-C.sub.4 alkyl, and R.sub.4 is C.sub.1-C.sub.4 alkyl. The process for preparing azoxystrobin of the present invention not only successfully replaces trimethyl orthoformate and reduces the raw material cost, but also has high total reaction yield, and is suitable for industrial large-scale production. Experiments have proven that the yield of the prepared azoxystrobin can reach 95%.

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The invention provides certain nicotine salts, co-crystals, and salt co-crystals and provides novel polymorphic forms of certain nicotine salts. In particular, nicotine salts with orotic acid are described. The invention further provides methods of preparation and characterization of such nicotine salts. In addition, tobacco products, including smoking articles, smokeless tobacco products, and electronic smoking articles comprising nicotine salts, co-crystals, and/or salt co-crystals are also provided.

The invention provides certain nicotine salts, co-crystals, and salt co-crystals and provides novel polymorphic forms of certain nicotine salts. In particular, nicotine salts with orotic acid are described. The invention further provides methods of preparation and characterization of such nicotine salts. In addition, tobacco products, including smoking articles, smokeless tobacco products, and electronic smoking articles comprising nicotine salts, co-crystals, and/or salt co-crystals are also provided.

This invention relates to pyrimidine derivatives, to compositions comprising the pyrimidine derivatives, to methods of making and using these compositions, and to the use of the pyrimidine derivatives as adjuvants, particularly for agrochemical use. In particular, the present invention relates to compositions comprising the pyrimidine derivatives selected from emulsifiable concentrates (EC), emulsions in water (EW), suspensions of particles in water (SC), soluble liquids (SL), capsule suspensions (CS), suspensions of particles with an emulsion (SE), dispersion concentrates (DC), suspensions of particles in oil (OD), water dispersible granules (WG), soluble granules (SG) and wettable powders (WP).

This invention relates to pyrimidine derivatives, to compositions comprising the pyrimidine derivatives, to methods of making and using these compositions, and to the use of the pyrimidine derivatives as adjuvants, particularly for agrochemical use. In particular, the present invention relates to compositions comprising the pyrimidine derivatives selected from emulsifiable concentrates (EC), emulsions in water (EW), suspensions of particles in water (SC), soluble liquids (SL), capsule suspensions (CS), suspensions of particles with an emulsion (SE), dispersion concentrates (DC), suspensions of particles in oil (OD), water dispersible granules (WG), soluble granules (SG) and wettable powders (WP).

The present invention provides hTERT modulators and methods for producing and using the same. In particular, the present invention provide a compound of the formula:

##STR00001##

where a, n, R.sup.1, R.sup.2, R.sup.3, R.sup.11 and R.sup.12 are as defined herein.

The present invention provides hTERT modulators and methods for producing and using the same. In particular, the present invention provide a compound of the formula:

##STR00001##

where a, n, R.sup.1, R.sup.2, R.sup.3, R.sup.11 and R.sup.12 are as defined herein.