通过AIBN / O 2催化剂体系实现了sp 3 C H键的官能化和C C键的裂解,在温和的反应条件下提供了一系列的二苯甲酮。机理研究表明,过氧化物中间体参与了这一转变,在二苯基甲烷的情况下,sp 3 C C键通过过氧化物重排而断裂,这可能提供了一种断裂相对较强的C C键并被应用的新方法。更一般的C C键活化。
The present invention provides compounds which promote erythropoietin production. Compounds represented by the following general formula (1) or pharmacologically acceptable salts thereof are provided:
[wherein, R
1
represents a group —X-Q
1
, X-Q
1
-Y-Q
2
or X-Q
1
-Y-Q
2
-Z-Q
3
, X represents a single bond, —CH
2
— or the like, Q
1
represents a monocyclic or bicyclic heterocyclic group which may have substituent(s), Y represents a single bond, —CH
2
—, or the like, Q
2
represents a monocyclic or bicyclic hydrocarbon ring group which may have substituent(s) or a monocyclic or bicyclic heterocyclic group which may have substituent(s), Z represents a single bond, —CR
11
R
12
— or the like, R
11
and R
12
each independently represents a hydrogen atom, a halogen atom or the like, Q
3
represents a phenyl group which may have substituent(s), a C
3
-C
7
cycloalkyl group which may have substituent(s), a C
3
-C
7
cycloalkenyl group which may have substituent(s) or a monocyclic or bicyclic heterocyclic group which may have substituent(s), R
2
represents a C
1
-C
3
alkyl group or the like, and R
3
represents a hydrogen atom or a methyl group].
Efficient synthesis of diarylmethane derivatives by PdCl 2 catalyzed cross-coupling reactions of benzyl chlorides with aryl boronic acids in aqueous medium
The research provides a simple and efficient method for preparing diarylmethane derivatives using the cross-coupling reaction of benzyl chlorides and aryl boronic acids catalyzed by palladium chloride in DMF aqueous solution without additional ligand.
Direct C(sp<sup>3</sup>)–H Arylation of Unprotected Benzyl Anilines and Alkylarenes by Organocatalysis under Visible Light
作者:Cheng Huang、Peng Xiao、Zhong-Ming Ye、Chen-Lu Wang、Chen Kang、Sheng Tang、Zhenhong Wei、Hu Cai
DOI:10.1021/acs.orglett.3c03980
日期:2024.1.12
alkylarenes via consecutive photoinduced electron transfer by visiblelight irradiation. Reductive quenching cycles and radical–radical cross-coupling were involved, and electron paramagnetic resonance experiments provide evidence for the formation of radical intermediates formed in situ. The protocol highlights transition metalfree, external oxidantfree, broad substrate scope, and high efficiency (>60 examples
The invention relates to bimesogenic compounds of formula I
wherein R
11
, R
12
, CG
1
, MG
1
, X
11
, X
12
and Sp
1
have the meaning given in claim
1
, to the use of mesogenic compounds of formula I in liquid crystal media and particular to flexoelectric liquid crystal devices comprising a liquid crystal medium according to the present invention.