Lithiation of Alkoxyalkyl Phenyl Sulfones. New Approach to Acyl Anion Synthesis
作者:Kazuhiko Tanaka、Syuichi Matsui、Aritsune Kaji
DOI:10.1246/bcsj.53.3619
日期:1980.12
l and 1-(1-ethoxyethoxy)ethyl phenyl sulfones undergo metalation with LDA in THF in the presence of HMPA. The resulting lithium salts were easily alkylated with various alkyl halides and hydrolyzed under mild conditions to give the corresponding carbonyl compounds. The new synthetic method for the preparation of aldehydes and ketones employing these carbanions has been developed.
[DE] VERWENDUNG VON THIADIAZOLHARNSTOFFDERIVATEN<br/>[EN] USE OF THIADIAZOLE UREA DERIVATIVES<br/>[FR] UTILISATION DE DERIVES DE THIADIAZOLE-UREE
申请人:MERCK PATENT GMBH
公开号:WO2005085220A1
公开(公告)日:2005-09-15
Verwendung von Verbindungen der Formel (I) worin Art, Ar2 und Z die in Patentanspruch 1 angegebenen Bedeutungen haben, zur Prophylaxe und/oder Behandlung von Krankheiten bei denen die Hemmung, Regulierung und/oder Modulation der Signaltransduktion von Kinasen, insbesondere der RAF-Kinasen, eine Rolle spielt.
Site-Selective C–H Functionalization–Sulfination Sequence to Access Aryl Sulfonamides
作者:Eva Maria Alvarez、Matthew B. Plutschack、Florian Berger、Tobias Ritter
DOI:10.1021/acs.orglett.0c00982
日期:2020.6.19
Aryl sulfinates are precursors to a diverse number of sulfonyl-derived arenes, which are common motifs in pharmaceuticals and agrochemicals. Here, we report a site-selective two-step C–H sulfination sequence via arylsulfoniumsalts to access aryl sulfonamides. Combined with site-selective aromatic thianthrenation, an operationally simple one-pot palladium-catalyzed protocol introduces the sulfonyl
[EN] IMIDAZOPYRIDINE DERIVATIVES AS KINASE INHIBITORS<br/>[FR] DERIVES D'IMIDAZOPYRIDINE EN TANT QU'INHIBITEURS DE KINASE
申请人:GLAXO GROUP LTD
公开号:WO2003080610A1
公开(公告)日:2003-10-02
A compound of the formula: (I) and-physiologically acceptable salts and or N-oxides thereof wherein, X1 is N or CR.3; X2 is N or CR'4; X3 ,is..N or CR5; X4 is N or CR6 with the proviso that at least one but not more than two of X1, X 2, X,3. and X4 represents N. R1 is a 5-, or 6-membered heterocyclic group selected from group a, b, c or d formula: (II) wherein X5 is a group selected from N or CR7: and X6, is a group selected from O, S or NR8; X7 and X8; which maybe the same or, different is a group selected from N or CR9; ; X9, is a group selected from O, S or NR8 and X10 is N or CR10 ; X11 , X12 and X13 may be the same or different and selected from a group N or CR11 ; processes for their preparation, pharmaceutical compositions containing them and their use in medicine.
A compound of the formula
and physiologically acceptable salts and or N-oxides thereof wherein,
X
1
is N or CR
3
; X
2
is N or CR
4
; X
3
is N or CR
5
; X
4
is N or CR
6
.
with the proviso that at least one but not more than two of X
1
, X
2
, X
3
and X
4
represents N.
R
1
is a 5-, or 6-membered heterocyclic group selected from group a, b, c or d
wherein X
5
is a group selected from N or CR
7
and X
6
is a group selected from O, S or NR
8;
X
7
and X
8
which may be the same or different is a group selected from N or CR
9;
X
9
is a group selected from O, S or NR
8
and X
10
is N or CR
10;
X
11
, X
12
and X
13
may be the same or different and selected from a group N or CR
11
; processes for their preparation, pharmaceutical compositions containing them and their use in medicine.