摘要:
The invention discloses a method for the preparation of certain 1,5 disubstituted tetrazole and similar compounds starting from certain thioacetamides, which ultimately allows the preparation of these certain 1,5 disubstituted tetrazoles from readily available compounds such as acetophenone and similar compounds.
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:
The invention discloses a method for the preparation of 6-trifluoromethylpyridine-3-carboxylic acid derivatives (I) from trifluoroacetylacetic acid (II) and orthoesters (III), and their use for the preparation of pharmaceutical, chemical or agro-chemical products.
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 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 preparation of alkylated or fluoro, chloro and fluorochloro alkylated compounds by a heterogeneous Pt/C-catalyzed alkylation or fluoro, chloro and fluorochloro alkylation with alkyl halides or with fluoro, chloro and fluorochloro alkyl halides in the presence of Cs2C03 or CsHC03.