Synthesis of β-phenylethylamines from styrene derivatives
作者:Julio A. Seijas、M.Pilar Vázquez-Tato、César Entenza、M. Montserrat Martínez、M.Gabriela Ònega、Susana Veiga
DOI:10.1016/s0040-4039(98)00907-1
日期:1998.7
β-Phenylethylamines are prepared from the styrenederivatives: 4,4-dimethyl-2-(2-vinylphenyl)-2-oxazoline, 2-(3-methoxy-2-vinylphenyl)-4,4-dimethyl-2-oxazoline, 2-vinylbenzoic acid, styrene, (3-methylstyrene, and α-methylstyrene.
Transition-metal-catalyzed hydroformylation has become an essential tool for the synthesis of aldehydes. In this paper, we highlight several examples of synthetically useful applications of homogeneous and heterogeneous rhodium-catalyzed hydroformylation, as well as several examples of tandem processes involving hydroformylation as a reaction step developed in our laboratory.
Verfahren zur Herstellung von Arylethylaminen durch Aminierung von Arylolefinen
申请人:Aventis Research & Technologies GmbH & Co KG
公开号:EP1157983A1
公开(公告)日:2001-11-28
Die Erfindung betrifft ein Verfahren zur Herstellung von 2-Arylethylaminderivaten mit einem Alkylsubstituenten in 1-Stellung der Formel (I),
Aryl-CHR1-CR2(NR3R4)-(CHR5R6)n-CHR7R8 (I)
durch Umsetzung von aromatischen Olefinen der allgemeinen Formeln (IIa-c)
Aryl-CHR1-CHR2-(CR5R6)a-CR5=CR6-(CR5R6)b-CHR7R8 (IIa)
Aryl-CHR1-CR2=CR5-(CR5R6)c-CHR7R8 (IIb)
Aryl-CHR1-CHR2-(CR5CR6)c-CR5=CR7CR8 (IIc)
mit Aminen der allgemeinen Formel (III),
R3R4NH (III)
in Gegenwart einer Base.
Process for the preparation of arylethylamines by amination of arylolefins
申请人:——
公开号:US20010047097A1
公开(公告)日:2001-11-29
The invention relates to a process for the preparation of 2-arylethylamine derivates having an alkyl substituent in the 1-position, of the formula (I)
aryl-CHR
1
—CR
2
(NR
3
R
4
)—(CHR
5
R
6
)
n
—CHR
7
R
8
(I)
by reaction of aromatic olefins of the general formulae (Ila-c)
aryl-CHR
1
—CHR
2
—(CR
5
R
6
)
a
—CR
5
═CR
6
—(CR
5
R
6
)
b
CHR
7
R
8
(IIa)
aryl-CHR
1
—CR
2
═CR
5
—(CR
5
R
6
)
c
—CHR
7
R
8
(IIb)
aryl-CHR
1
—CHR
2
—(CR
5
CR
6
)
c
—CR
5
═CR
7
CR
8
(IIc)
with amines of the general formula (III)
R
3
R
4
NH
in the presence of a base.
本发明涉及一种 2-芳基乙胺衍生物的制备方法,该衍生物在 1 位具有烷基取代基,其式为 (I)
芳基-CHR
1
-CR
2
(NR
3
R
4
)-(CHR
5
R
6
)
n
-CHR
7
R
8
(I)
通过与通式(Ila-c)的芳香族烯烃反应
芳基-CHR
1
-CHR
2
-(CR
5
R
6
)
a
-CR
5
═CR
6
-(CR
5
R
6
)
b
CHR
7
R
8
(IIa)
芳基-CHR
1
-CR
2
═CR
5
-(CR
5
R
6
)
c
-CHR
7
R
8
(IIb)
芳基-CHR
1
-CHR
2
-(CR
5
CR
6
)
c
-CR
5
═CR
7
CR
8
(IIc)
与通式(III)的胺
R
3
R
4
NH
在有碱存在的情况下。
Zwitterionic rhodium complex catalyzed hydroaminomethylation of arylethylenes
作者:Yong-Shou Lin、Bassam El Ali、Howard Alper
DOI:10.1016/s0040-4039(01)00202-7
日期:2001.3
The hydroaminomethylation of arylethylenes can be achieved in high regioselectivity using the zwitterionic rhodium complex [Rh+(cod)(eta (6)-PhBPh3)(-)] (1) as the catalyst under relatively mild conditions. (C) 2001 Elsevier Science Ltd. All rights reserved.