摘要:
The invention discloses a method for preparations of fluoro, chloro and fluorochloro alkylated compounds by homogeneous Pd catalyzed fluoro, chloro and fluorochloro alkylation with fluoro, chloro and fluorochloroalkyl halides in the presence of di(1-adamantyl)-adamantyl-n-butylphosphine and in the presence of 2,2,6,6-tetramethylpiperdine 1-oxyl.
摘要:
The invention discloses a method for preparation of 2-(2,3-dimethylphenyl)-1-proponal from bromo 2,3-dimethyl-benzene and aceton, its use in perfumes and its use for the preparation of medetomidine.
摘要:
The invention discloses a method for preparation of alkylated, fluoro alkylated, chloro alkylated and fluorochloro alkylated compounds by a heterogeneous Co-catalysed alkylation or fluoro, chloro and fluorochloro alkylation with alkyl halides, fluoro alkyl halides, chloro alkyl halides or fluorochloro alkyl halides respectively.
摘要:
The invention discloses a method for the preparation of substituted 4-(heptafluoro-2-propyl) anilines by reaction of 2-bromoheptafluoropropane with anilines in the presence of sodium dithionite, in a solvent and in the presence of a catalyst.
摘要:
The invention discloses a method for the preparation of thiophene-2-carbonyl chlorides starting from thiophenes with oxalyl chloride at elevated temperature with short reaction time.
摘要:
A hair treatment composition is described that contains an acetoacetylated compound. The acetoacetylated compound, for instance, can be a bis acetoacetylated compound. In one embodiment, for instance, the acetoacetylated compound comprises a bis acetoacetate or a bis acetoacetamide. In one embodiment, the hair treatment composition can be used to straighten hair. The composition is also well suited for decreasing hair frizz. The acetoacetylated compound is capable of crosslinking hair fibers upon the application of heat.
摘要:
The invention discloses a method for the preparation of octahydrocyclopenta[c]pyrrole, also called 3-azabicyclo[3.3.0]octane, by hydrogenation of 1,2-dicyanocyclo-1-pentene.
摘要:
The invention discloses a method for the preparation of 2-(2,3-dimethylphenyl)-1-propanal starting from 1-bromo 2,3-dimethylbenzene and chloroacetone, its use in perfumes and its use for the preparation of medetomidine.
摘要:
The invention discloses a method for the preparation of substituted 4-(heptafluoro-2-propyl) anilines by reaction of 2-bromoheptafluoropropane with anilines in the presence of sodium dithionite, in a solvent and in the presence of a catalyst.