Stereodefined Homopropargyl Amines by Tandem Nucleophilic Addition/Fragmentation of Dihydropyridone Triflates
摘要:
Dihydropyridone (DHPD) triflates undergo nucleophile-triggered fragmentation to provide homopropargyl amine derivatives, the stereochemistry of which is defined by starting from readily available beta-amino esters.
Stereodefined Homopropargyl Amines by Tandem Nucleophilic Addition/Fragmentation of Dihydropyridone Triflates
摘要:
Dihydropyridone (DHPD) triflates undergo nucleophile-triggered fragmentation to provide homopropargyl amine derivatives, the stereochemistry of which is defined by starting from readily available beta-amino esters.
Synthesis of [60]Fullerene-Fused Spiroindanes by Palladium-Catalyzed Oxidative Annulation of [60]Fullerene with 2-Aryl Cyclic 1,3-Dicarbonyl Compounds
作者:Dian-Bing Zhou、Guan-Wu Wang
DOI:10.1021/acs.orglett.6b01043
日期:2016.6.3
A convenient and facile palladium-catalyzedreaction of [60]fullerene (C60) with 2-aryl cyclic 1,3-dicarbonyl compounds via the enolate-directed sp2 C–H activation and sp3 C–H functionalization has been exploited to synthesize the novel and rare C60-fused spiroindanes for the first time. This reaction is easy to perform with broad substrate scope and provides diversified products in 20–50% yields.
A polarizing plate composition, a polarizing plate protective film, a polarizer, a polarizing plate, and a liquid crystal display device contain a compound represented by the following Formula (I).
In Formula (I), R represents a specific substituent, and each of EWG1 and EWG2 represents an electron-withdrawing group. EWG1 and EWG2 may form a ring by being bonded to each other. Here, there is no such case where EWG1 and EWG2 become the following group by being bonded to each other and form a ring by being bonded to a carbon atom substituted with R.
Each of Rx and Ry represents a hydrogen atom or a substituent. * represents a position of bonding to a carbon atom substituted with R.
一种偏光板组合物、偏光板保护膜、偏光板、偏光板和液晶显示装置含有下式 (I) 所代表的化合物。
在式(I)中,R 代表一个特定的取代基,EWG1 和 EWG2 分别代表一个抽电子基团。EWG1 和 EWG2 可通过相互键合形成一个环。在此,不存在 EWG1 和 EWG2 通过相互键合而成为下一个基团,并通过与被 R 取代的碳原子键合而形成环的情况。
Rx 和 Ry 各自代表氢原子或取代基。* 代表与被 R 取代的碳原子成键的位置。
Baumgarten; Kaergel, Chemische Berichte, 1927, vol. 60, p. 836
A polarizing plate composition, a polarizing plate protective film, a polarizer, a polarizing plate, and a liquid crystal display device contain a compound represented by the following Formula (I).
In Formula (I), R represents a specific substituent, and each of EWG
1
and EWG
2
represents an electron-withdrawing group. EWG
1
and EWG
2
may form a ring by being bonded to each other. Here, there is no such case where EWG
1
and EWG
2
become the following group by being bonded to each other and form a ring by being bonded to a carbon atom substituted with R.
Each of Rx and Ry represents a hydrogen atom or a substituent. * represents a position of bonding to a carbon atom substituted with R.