The invention relates to a process for preparing arylamines or heteroarylamines or arylamides or heteroarylamides by cross-coupling of primary or secondary amines or amides with substituted aryl or heteroaryl compounds in the presence of a Brønsted base and a catalyst or precatalyst, wherein the catalyst comprises
a) a transition metal, a complex, a salt or a compound of this transition metal selected from the group consisting of Ni, Pd and
b) at least one ligand selected from the group consisting of bidentate bis(phosphino)alkanediyls having the following formula in a solvent or solvent mixture,
where the radicals Ar
1-4
are each, independently of one another, an aryl or heteroaryl substituent selected from the group consisting of phenyl, naphthyl, pyridyl and biphenyl or Ar
1-4
is hydrogen, C
1
-, C
2
-alkyl, straight-chain, branched or cyclic C
3
-C
8
-alkyl, and
L is an alkanediyl bridge which has from 1 to 20 carbon atoms.
该发明涉及一种在Brønsted碱和催化剂或前催化剂存在下,通过一次或二次胺或酰胺与取代芳基或杂芳基化合物的交叉偶联制备芳基胺或杂芳基胺或芳酰胺或杂芳酰胺的方法,其中催化剂包括
a) 过渡金属,该过渡金属的配合物、盐或化合物,所述过渡金属选自Ni、Pd组成的群体,以及
b) 至少一种来自双齿膦烷二基的配体,其具有以下公式,在溶剂或溶剂混合物中,
其中基团Ar
1-4
分别独立地选自苯基、萘基、吡啶基和联苯基等芳基或杂芳基取代基,或Ar
1-4
为氢、C
1
-、C
2
-烷基、直链、支链或环状C
3
-C
8
-烷基,以及
L是具有1至20个碳原子的烷二基桥。
A novel catalytic one-pot synthesis of carbazoles via consecutive amination and C–H activation
作者:Robin B. Bedford、Catherine S. J. Cazin
DOI:10.1039/b207712b
日期:——
Sequential palladium catalysed amination and CâH activation reactions occur between 2-chloro-N-alkylated anilines and aryl bromides to give carbazoles in one pot.
A heat sensitive record sheet comprises a coated layer comprising 2-(2-chlorophenyl)amino-6-di-propyl- or butyl-aminofluoran derivative.
热敏记录片包括一个由 2-(2-氯苯基)氨基-6-二丙基或丁基氨基荧烷衍生物组成的涂层。
FLUORAN COMPOUNDS
申请人:HODOGAYA CHEMICAL CO., LTD.
公开号:EP0180643A1
公开(公告)日:1986-05-14
Fluoran compounds represented by general formula (I) (wherein R, represents a straight-chain or branched C, to C8 alkyl group, a cyclohexylalkyl group, a cyclic alkyl group, an optionally substituted phenyl group, an alkoxyalkyl group, an optionally substituted benzyl group, or a hydrogen atom, R2 represents a hydrogen atom, a halogen atom, an alkyl group containing 1 to 4 carbon atoms, an optionally substituted phenyl group, an optionally substituted benzyl group, a lower alkoxy group or a lower alkoxyalkyl group, R3 represents a hydrogen atom, a chlorine atom, a fluorine atom or an alkyl group containing 1 to 4 carbon atoms, and n represents an integer of 1 to 3) and a recording material prepared therefrom.
Novel fluoran compounds and production and use thereof
申请人:TAOKA CHEMICAL CO., LTD
公开号:EP0176161A1
公开(公告)日:1986-04-02
A fluoran compound of the formula:
wherein R1 is C3-C13 secondary alkyl with respect to the carbon atom bonded to the nitrogen atpm, R2 is C1-C4 primary alkyl, C3-C4 alkenyl or C3-C4 alkoxyalkyl, R3 and R4 are, same or different, hydrogen, halogen, C1-C4 alkyl or trifluoromethyl, R5 is hydrogen, methyl, ethyl or halogen, which is useful as a color former and develops deep black with a developer.