Results 91 to 100 of about 112,449 (386)

11-[Bis(trimethylsilyl)amino]-2,4-bis(trimethylsilyl)-7,8,9,10-tetrahydro-6H-cyclohepta[1,2-b]quinoline

open access: yesIUCrData, 2017
In the title compound, C26H48N2Si4, the cycloheptane ring adopts a chair conformation, while the quinolinyl ring system is almost planar [maximum deviation = 0.040 (3) Å for one of the C atoms carrying a Me3Si group].
Ísmail Çelik   +5 more
doaj   +1 more source

Enantioselective PCCP Brønsted acid-catalyzed aza-Piancatelli rearrangement. [PDF]

open access: yes, 2019
An enantioselective aza-Piancatelli rearrangement has been developed using a chiral Brønsted acid based on pentacarboxycyclopentadiene (PCCP). This reaction provides rapid access to valuable chiral 4-amino-2-cyclopentenone building blocks from readily ...
Delgado, Jose M   +5 more
core  

A defective ABC transporter of the MRP family, responsible for the bean lpa1 mutation, affects the regulation of the phytic acid pathway, reduces seed myo-inositol and alters ABA sensitivity [PDF]

open access: yes, 2011
We previously identified the lpa1 (low phytic acid) 280-10 line that carries a mutation conferring a 90% reduction in phytic acid (InsP6) content. In contrast to other lpa mutants, lpa1(280-10) does not display negative pleiotropic effects.
Bollini, Roberto   +10 more
core   +1 more source

Die Chemie und Biologie der Tetrodotoxin Naturstofffamilie

open access: yesAngewandte Chemie, EarlyView.
Tetrodotoxin ist vor allem als das Gift des Kugelfisches bekannt, einer Delikatesse in der japanischen Küche. Seine Toxizität beruht auf der selektiven Blockade von NaV Kanälen, wie am Beispiel der NaV1.7 Pore dargestellt, wobei das DEKA Motiv hervorgehoben ist, das für die Durchlässigkeit von Natriumionen verantwortlich ist.
Benedikt Nißl   +6 more
wiley   +1 more source

Privileged Chiral Photocatalysts

open access: yesAngewandte Chemie, EarlyView.
Privileged chiral catalysts have transformed asymmetric synthesis, conferring generality to processes that are routinely leveraged in the construction of societally important functional small molecules. This mini‐review is intended to survey the conception and evolution of privileged chiral photocatalyst scaffolds that enable simultaneous orchestration
Emanuel Studer   +3 more
wiley   +2 more sources

Separation of mono- and diglycerides by gas-liquid chromatography

open access: yesJournal of Lipid Research, 1969
The parameters affecting the separation and quantification of trimethylsilyl ethers of mono- and diglycerides have been investigated by gas-liquid chromatography with QF-1 and SE-30 as stationary phases and a flame ionization detector.
Rodney Watts, R. Dils
doaj  

Bis(trimethylsilyl)chromate Catalyzed Oxidations of Alcohols to Aldehydes and Ketones with Periodic Acid

open access: yesMolecules, 2007
A facile, selective and high yielding bis(trimethylsilyl) chromate (BTSC) catalyzed selective oxidation of alcohols to aldehydes and ketones with periodic acid is reported.
Karim Asadolah   +3 more
doaj   +1 more source

Regioselective reactions of 3,4-pyridynes enabled by the aryne distortion model. [PDF]

open access: yes, 2013
The pyridine heterocycle continues to play a vital role in the development of human medicines. More than 100 currently marketed drugs contain this privileged unit, which remains highly sought after synthetically. We report an efficient means to access di-
Garg, Neil K, Goetz, Adam E
core  

One-step synthesis of pyridines and dihydropyridines in a continuous flow microwave reactor [PDF]

open access: yes, 2013
The Bohlmann–Rahtz pyridine synthesis and the Hantzsch dihydropyridine synthesis can be carried out in a microwave flow reactor or using a conductive heating flow platform for the continuous processing of material. In the Bohlmann–Rahtz reaction, the use
Bagley, Mark C   +4 more
core   +2 more sources

Synthesis and Structures of [(Trimethylsilyl)methyl]sodium and ‐potassium with Bi‐ and Tridentate N‐Donor Ligands

open access: yes, 2011
[(Trimethylsilyl) methyl] sodium [NaCH2SiMe3] (1) was prepared by a metathesis reaction of [(trimethylsilyl) methyl] lithium [LiCH2SiMe3] with sodium tert-butoxide in n-hexane. Polydentate donors such as N,N,N',N'-tetramethylethylenediamine (TMEDA) and N,
W. Clegg   +5 more
semanticscholar   +1 more source

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