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91.
Ferrocenyl carbodiimide (1) could be used for the direct labeling of synthetic RNA and expressed mRNA in vitro with the electrochemically active ferrocene moieties. These RNAs modified by 1 could be detected electrochemically coupled with a DNA probe-immobilized electrode. After hybridization of 1.1 Kb mRNA modified by 1 with the DNA probe-immobilized electrode, the peak charge observed by an Osteryoung square wave voltammetry (SWV) measurement correlated well with the concentration of mRNA, having a detection limit at the sub nanogram level.  相似文献   
92.
A one-pot conversion of isoindolines to 1-arylisoindoles was established from palladium-catalyzed cascade C-H transformations, that is, the dehydrogenation of isoindolines to give isoindoles, with subsequent C-H arylation of the isoindoles.  相似文献   
93.
Ihara H  Koyanagi M  Suginome M 《Organic letters》2011,13(10):2662-2665
Anthranilamide (AAM) serves as a bifunctional modifier on the boron atom in catalytic transformations of arylboronic acids. It makes boronyl groups unreactive in Suzuki-Miyaura coupling and promotes Ru-catalyzed ortho-silylation. Suzuki-Miyaura coupling of AAM-modified bromophenylboronic acids with tolylboronic acid gave 1,1'-biaryl-4-boronic acid bearing AAM on the boron atom, which subsequently underwent Ru-catalyzed ortho-silylation at the 3-position by virtue of the ortho-directing effect of the AAM group.  相似文献   
94.
Local structure of Te3X2 (X = Cl, Br) chalcohalide glasses were studied using ab initio molecular orbital (MO) theory. The calculation results were compared with Mössbauer spectroscopic parameters in terms of electric-field gradient and electron density at each Te site. In addition, the existence of terminal bond –Te–X was examined. The MO analysis of Te-chain and Te-chain with Cl atoms within a picture of the frontier orbital theory elucidated that the localized orbital at –TeCl2– site is important to form tellurium halide glass.  相似文献   
95.
Three, five, six, and seven-membered carbocyclic compounds, some of which contain an extracyclic chiral center, were synthesized highly stereo-selectively by the Michael induced intramolecular alkylation.  相似文献   
96.
97.
The structures of cyclonervilasterol (1a) and its analogs (2a, 3a, and 4a), isolated from Nervilia purpurea, were confirmed by application-of 2-D NMR spectroscopy including INADEQUATE and also their 13C NMR signals were assigned.  相似文献   
98.
99.
1H NMR spectrum of 8,13-dichloro-1,2,3,4-tetrafluoro-9-methyltriptycene at low temperature, where internal rotation of the methyl group is frozen, shows that 1-F couples to the ap proton of the methyl group with a coupling constant of 8.7 Hz and to the sc protons with 6.1 Hz.  相似文献   
100.
The copolymerization of butadiene with vinyl chloride was demonstrated in homogeneous phase by radiation. The reactivity parameters were r1 = 10 and r2 = 0.02 (M1 = butadiene) in bulk at ?10°C. The average molecular weight of the product was about 1000–2500, depending reaction conditions.  相似文献   
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