- Disparate Catalytic Scaffolds for Atroposelective Cyclodehydration
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Catalysts that control stereochemistry are prized tools in chemical synthesis. When an effective catalyst is found, it is often explored for other types of reactions, frequently under the auspices of different mechanisms. As successes mount, a unique cata
- Kwon, Yongseok,Li, Junqi,Reid, Jolene P.,Crawford, Jennifer M.,Jacob, Roxane,Sigman, Matthew S.,Toste, F. Dean,Miller, Scott J.
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supporting information
p. 6698 - 6705
(2019/05/06)
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- BENZIMIDAZOLO[1,2-A]BENZIMIDAZOLE DERIVATIVES FOR ORGANIC LIGHT EMITTING DIODES
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Compounds of formula (I) and their use in electronic devices, especially electroluminescent devices: (I) wherein at least two of the substituents R1 and R2, R2 and R3, R3 and R4, R5 and R6, R6 and R7, or R7 and R8 form together one of the following ring systems (IIa), (IIb) (IIc). When used as charge transport material, charge blocker material and/or host material in electroluminescent devices, the compounds of formula (I) may provide improved efficiency, stability, manufacturability, or spectral characteristics of electroluminescent devices and reduced driving voltage of electroluminescent devices.
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- Phosphorescent material
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Heteroleptic compounds containing phenylpyridine and phenylbenzimidazole are provided. The compounds may be used in organic light emitting devices, particularly as emissive dopants in the emissive layer of such devices.
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- A thiourea-oxazoline library with axial chirality: Ligand synthesis and studies of the palladium-catalyzed enantioselective bis(methoxycarbonylation) of terminal olefins
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We report herein the synthesis of novel chiral S,N-heterobidentate thiourea-oxazoline ligands and their application to palladium-catalyzed enantioselective bis(methoxycarbonylation)s of terminal olefins under mild conditions. Copper salts were found to play multiple roles in this reaction. Substituted 2- phenylsuccinates were obtained in >90% yield and up to 84% ee under optimized conditions.
- Gao, Ying-Xiang,Chang, Le,Shi, Hang,Liang, Bo,Wongkhan, Kittiya,Chaiyaveij, Duangduan,Batsanov, Andrei S.,Marder, Todd B.,Li, Chuang-Chuang,Yang, Zhen,Huanga, Yong
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supporting information; experimental part
p. 1955 - 1966
(2010/11/03)
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- COENZYME MODELS. PART 45. SYNTHESIS OF ATROPISOMERIC FLAVINS AND THEIR NOVEL REDOX-INDUCED RACEMISATION
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Seven (5-carba)isoalloxazines with restricted rotation about the C(1')-N(10) single bond were synthesized for the first time.They were optically resolved by a liquid chromatographic method.Six of these atropisomers (92.1-100 percent enantiomeric excess) (
- Shinkai, Seiji,Nakao, Hideki,Kuwahara, Itsuko,Miyamoto, Megumi,Yamaguchi, Toshiro,Manabe, Osamu
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p. 313 - 320
(2007/10/02)
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- SYNTHESIS AND OPTICAL RESOLUTION OF A NEW FLAVIN WITH AXIAL CHIRALITY AND REDOX-DEPENDENT RACEMIZATION
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A new flavin (3-methyl-10-(2'-phenyl)phenylisoalloxazine) with restricted rotation about the C(1')-N(10) single bond was synthesized and optically resoluted for the first time. (+)-Isomer (100percent enantiomeric purity) did not racemize at ambient condit
- Shinkai, Seiji,Nakao, Hideki,Manabe, Osamu
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p. 5183 - 5186
(2007/10/02)
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