描述了由六氢化物配合物OsH 6(P i Pr 3)2(1)促进的烷基腈向对称和不对称仲脂肪族仲胺的转化,并建立了涉及的反应机理。配合物1催化具有直链或支链的芳基,吡啶基和烷氧基官能化的烷基腈的上述转化。仲胺的形成涉及伯亚胺,伯胺和仲亚胺作为有机中间体。反应在温和的条件下(甲苯,100°C和4 bar H 2)进行。1的化学计量反应与新戊腈和2-甲氧基乙腈一起使我们能够分离三氢化物氮杂亚乙烯基衍生物OsH 3 {═N═CHR}(P i Pr 3)2(R = t Bu(3),CH 2 OMe(4))。它们的形成涉及将底物的N–C三键插入不饱和四氢化物OsH 4(P i Pr 3)2(A)的Os–H键中,这是通过从六氢化合物中消除H 2产生的前体。这些三氢化物氮杂亚乙烯基物质与H 2的反应是还原腈的N-C三键的关键步骤。在没有H 2的情况下,A对氮杂亚乙烯基配体的攻击会导致其C(sp 2)–C(sp
The invention provides ionic liquids and processes for their preparation. The liquids may either comprise a cation of the formula (I); N
+
HR
1
R
2
R
3
(I) wherein R
1
is a group —R
4
—O—R
5
; R
2
and R
3
are each independently either hydrogen or hydrocarbyl, R
2
and R
3
may be joined together with the N to form a heterocyclic group; R
4
is a divalent hydrocarbyl radical; and R
5
is hydrocarbyl; or a cation of the formula (II), N+HR6R7R8 (II) wherein R
6
is an alkanolyl group; R
7
is a hydrocarbyl group; and R
8
is either hydrogen or hydrocarbyl, or R
7
and R
8
may be joined together with the N to form a heterocyclic group.
METHOD FOR EXTRACTING TARGET ALKALOID USING AN IONIC LIQUID AS EXTRACTING SOLVENT
申请人:Bioniqs Limited
公开号:EP2001877A1
公开(公告)日:2008-12-17
Liquids
申请人:Walker John Adam
公开号:US20070185330A1
公开(公告)日:2007-08-09
The present invention relates to ionic liquid comprising an anion and a cation wherein the cation is a primary, secondary or tertiary ammonium ion containing a protonated nitrogen atom.
LIQUIDS
申请人:Walker Adam John
公开号:US20110257433A1
公开(公告)日:2011-10-20
The present invention relates to an ionic liquid comprising an anion and a cation, wherein the cation is a primary, secondary or tertiary ammonium ion containing a protonated nitrogen atom.