NEW AMINO-PYRIMIDONYL-PIPERIDINYL DERIVATIVES, A PROCESS FOR THEIR PREPARATION AND PHARMACEUTICAL COMPOSITIONS CONTAINING THEM
Compounds of formula (I) wherein R1, R2, R3, R4, R5, n and Q are as defined in the description. Medicaments.
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(2020/05/21)
CATALYST SYSTEMS FOR PREPARING 1-HEXENE AND/OR 1-OCTENE FROM ETHYLENE
This invention relates to a catalyst system for selective oligomerization of ethylene, which includes (i) a chromium compound; (ii) a ligand having a P—C—C—P backbone structure; and (iii) an activator, thus preparing 1-hexene and/or 1-octene with high activity and selectivity.
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(2015/02/25)
OLIGOMERISATION OF ETHYLENE TO MIXTURES OF 1-HEXENE AND 1-OCTENE
A process for the oligomerisation, preferably the tetramerisation, of ethylene to predominantly 1- hexene or 1-octene or mixtures of 1-hexene and 1-octene includes contacting ethylene with a catalyst under ethylene oiigomerisation conditions. The catalyst
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(2014/12/09)
N-Acyl-3-azetidinone
Disclosed herein are novel N-acyl-3-aryl-3-azetidinols useful as intermediates. A method is provided for their direct preparation from acyclic starting materials. These N-acyl-3-aryl-azetidinols provide a convenient route to the 3-azetidinol series.