Novel pyrazolo- and pyrrolo-pyrimidines and uses thereof
申请人:——
公开号:US20030114467A1
公开(公告)日:2003-06-19
The invention relates to compounds of the general formula:
1
in which R
A
-R
C
and W are as defined herein, and to their preparation and use.
这项发明涉及一般公式为:1的化合物,其中RA-RC和W如本文所定义,以及它们的制备和用途。
Method for preparing aminoarylborane compounds or derivatives thereof
申请人:Université de Bordeaux I
公开号:EP2881398A1
公开(公告)日:2015-06-10
The present invention provides a process for the preparation of aminoarylborane compounds and derivatives thereof comprising a step of arylation by reacting an aryl chloride with an aminoborane compound in the presence of a catalytic system.
Typically, the transformation comprises, converting Aryl-chloride Ar-Cl with an aminoborane such as
into an aminoarylborane compound of the following formula:
METHOD FOR PRODUCING CATALYST FOR CYCLIC CARBONATE SYNTHESIS
申请人:MARUZEN PETROCHEMICAL CO., LTD.
公开号:US20160108071A1
公开(公告)日:2016-04-21
The present invention provides a method for easily and inexpensively producing a heterogeneous catalyst used to synthesize a cyclic carbonate by reacting an epoxide with carbon dioxide and having excellent catalyst activity; a catalyst obtained using said manufacturing method; and a method for synthesizing a cyclic carbonate using said catalyst.
A method for producing a catalyst that is used for the purpose of synthesizing a cyclic carbonate by subjecting to a reaction an epoxide with carbon dioxide, said method comprising the following steps (a) and (b):
(a) a step of obtaining a catalyst precursor having a haloalkyl group or a haloaryl group by reacting a silane compound with a silica gel in the presence of xylene, the silane compound having a haloalkyl group or a haloaryl group and
(b) a step of obtaining a catalyst for synthesizing a cyclic carbonate by reacting the catalyst precursor obtained in step (a) with a tertiary phosphine.
This invention relates to compounds of the general formula:
1
in which R
A
, R
B
, R
C
and R
D
are as defined herein, and to their preparation and use.