摘要:
2-Trifluoromethyl-5-(1-substituted)alkylpyridines are produced efficiently and in high yield from an 4-alkoxy-1,1,1-trifluorobut-3-en-2-one by a condensation and a cyclization reaction. Both reactions are performed in the same nonpolar solvent without isolation and purification of intermediates.
摘要:
The present disclosure is directed to the production of 5-tert-butyl-3-methyl-l,2- phenylene dibenzoate and the purification thereof. Synthesis pathways for a precursor to 5- tert-butyl-3 -methyl- 1,2-phenylene dibenzoate are provided. The precursor is 5-tert-butyl-3-methylcatechol.
摘要:
4-Amino-5-fluoro-3-halo-6-(substituted)picolinates are conveniently prepared from 4,5,6-trichloropicolinates by a series of steps involving fluorine exchange, amination, halogen exchange, halogenation and transition metal assisted coupling.
摘要:
4-Amino-5-fluoro-3-halo-6-(substituted)picolinates are conveniently prepared from 4,5,6-trichloropicolinonitrile by a series of steps involving fluorine exchange, amination, halogen exchange, halogenation, nitrile hydrolysis, esterification, and transition metal assisted coupling.
摘要:
2-Trifluoromethyl-5-(1-substituted)alkylpyridines are produced efficiently and in high yield from an 4-alkoxy-1,1,1-trifluorobut-3-en-2-one by a condensation and a cyclization reaction. Both reactions are performed in the same nonpolar solvent without isolation and purification of intermediates.
摘要:
2-Trifluoromethyl-5-(1-substituted)alkylpyridines are produced efficiently and in high yield from an alkyl vinyl ether and trifluoroacetyl chloride by cyclization.
摘要:
The present disclosure is directed to the production of 5-tert-butyl-3-methyl-l,2- phenylene dibenzoate and the purification thereof. Synthesis pathways for a precursor to 5- tert-butyl-3 -methyl- 1,2-phenylene dibenzoate are provided. The precursor is 5-tert-butyl-3-methylcatechol.
摘要:
The present disclosure is directed to the production of substituted phenylene aromatic diesters and 5-tert-butyl-3-methyl-l,2-phenylene dibenzoate (or "BMPD") in particular. The processes disclosed herein produce a liquid BMPD product. The liquid BMPD product unexpectedly creates production efficiencies by reducing the number of production steps, reducing the amount and/or number of reagents required for BMPD production. The liquid BMPD product may also be utilized in procatalyst production yielding similar production efficiencies. The procatalyst composition is subsequently used for olefin polymerization.
摘要:
5-Substituted-8-alkoxy[ 1,2,4]triazolo[ 1,5-c]pyrimidin-2-amines are manufactured from 2-substituted-4-amino-5-methoxypyrimidines in a process that avoids hydrazine and cyanogen halide.
摘要:
The present disclosure is directed to the production of 5-tert-butyl-3-methyl-l,2- phenylene dibenzoate and the purification thereof. Synthesis pathways for a precursor to 5- tert-butyl-3 -methyl- 1,2-phenylene dibenzoate are provided. The precursor is 5-tert-butyl-3-methylcatechol.