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Remarkable Effect of Pore Size on the Catalytic Activity of Mesoporous Silica...
The catalytic activity of mesoporous silica (MCM-41) for the acetalization of cyclohexanone shows a volcano-shaped dependence on the pore diameter. The diameter of the... -
Construction of Novel Polycyclic Ring Systems by Transition-Metal-Catalyzed C...
Construction of Novel Polycyclic Ring Systems by Transition-Metal-Catalyzed Cycloisomerization of Ene−Ene−Ynes. Interception of a Carbenoid Intermediate in Skeletal... -
Rational Designs for Highly Proton-Conductive Metal−Organic Frameworks
A novel metal−organic framework (MOF), (NH4)2(adp)[Zn2(ox)3]·3H2O (1) was synthesized and its structure was determined. We propose three types of rational design to introduce... -
The Linkage of Catalysis and Regulation in Enzyme Action. Fluoropyruvate as a...
Pyruvate decarboxylase, a thiamin-diphosphate (ThDP) dependent enzyme from the yeast Saccharomyces cerevisiae (SCPDC), catalyzes the conversion of fluoropyruvate to carbon... -
Development of Chiral Nucleophilic Pyridine Catalysts: Applications in Asymm...
TADMAP (1a), a new chiral DMAP catalyst, has been designed to place a C(3)-benzylic trityl group over one face of the pyridine ring, while a C(3)-benzylic acetoxy group creates... -
Total Synthesis of Archazolid A.
The archazolids are complex polyketides isolated from the myxobacterium Archangium gephyra and are potent inhibitors of vacuolar type ATPases. Herein, we report the first total... -
Synthesis of (+)-Complanadine A, an Inducer of Neurotrophic Factor Excretion
A total synthesis of the Lycopodium alkaloid (+)-complanadine A is described. Complanadine A has been shown to induce the secretion of neurotrophic factors from 1321N1 cells,... -
Phase-Vanishing Reactions that Use Fluorous Media as a Phase Screen. Facile, ...
In fluorous triphasic reactions, such as bromination of alkenes by dibromine and dealkylation of aromatic ethers by boron tribromide, the middle fluorous phase acts as a liquid... -
Lithium Diisopropylamide-Mediated Enolizations: Solvent-Independent Rates, S...
Rate studies of a lithium diisopropylamide-mediated ester enolization reveal solvation effects that are not in accord with expectation. Metalations in THF, t-BuOMe, HMPA/THF,... -
Design of an organic chromophore for p-type dye-sensitized solar cells [Errat...
A successful model for the design of efficient dyes for p-type dye-sensitized solar cells (DSSCs) is presented. As an example, a novel and efficient organic dye containing a... -
Domino Coupling Relay Approach to Polycyclic Pyrrole-2-carboxylates
CuBr2-catalyzed three-component coupling of N-benzylallylamine, ethyl glyoxalate, and terminal alkynes afforded glycine-tethered 1,6-enynes, which were further transformed into... -
Synthesis of Optically Active Oligonaphthalenes via Second-Order Asymmetric T...
Synthesis of numerous optically active rod-shaped oligo(2,3-dioxyfunctionalized)naphthalenes connected at their 1,4-positions was achieved using oxidative coupling under... -
Covalent Organic Frameworks as Exceptional Hydrogen Storage Materials
We report the H_2 uptake properties of six covalent organic frameworks (COFs) from first-principles-based grand canonical Monte-Carlo simulations. The predicted H_2 adsorption... -
How to Design Linear Allenic-Type Trisilaallenes and Trigermaallenes
A theoretical prescription as to how to design allenic-type linear trisilaallenes and trigermaallenes is provided. Until now, all of the heavier group − 14 analogues of allene... -
Rational Design of Cavitand Receptors for Mass Sensors
This Communication describes a rational approach to the fabrication of selective mass sensors, using multiple hydrogen-bonding type interactions encoded in a single cavitand... -
Total Synthesis of (±)-Chartelline C
The first total synthesis of (±)-chartelline C in a concise 10-step sequence is reported. Highlights of the completion of this decades-old puzzle include (1) chemo- and... -
Screening of π-Basic Naphthalene and Anthracene Amplifiers for π-Acidic Synth...
Synthetic ion channels and pores attract current attention as multicomponent sensors in complex matrixes. This application requires the availability of reactive signal... -
Sol−Gel Derived Nitric-Oxide Releasing Materials that Reduce Bacterial Adhesion
Sol−Gel Derived Nitric-Oxide Releasing Materials that Reduce Bacterial Adhesion -
Oxidative DNA Cleavage by the Antitumor Antibiotic Leinamycin and Simple 1,2-...
Oxidative DNA Cleavage by the Antitumor Antibiotic Leinamycin and Simple 1,2-Dithiolan-3-one 1-Oxides: Evidence for Thiol-Dependent Conversion of Molecular Oxygen to... -
Practical Asymmetric Conjugate Alkynylation of Meldrum’s Acid-Derived Accepto...
The enantioselective conjugate addition of alkynyl nucleophiles has been a long-standing challenge in synthetic chemistry. This paper describes a highly practical asymmetric...
