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Perylene Synthesis by the Parallel Cycloaromatization of Adjacent Enediynes
As part of an investigation into new synthetic routes to poly(peri-naphthalene), the synthesis and cycloaromatization of tetraethynylbiphenyls is described. 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... -
Sagittamides A and B. Polyacetoxy Long-Chain Acyl Amino Acids from a Didemnid...
An unidentified tunicate from Pohnpei, Micronesia, yielded sagittamides A and Bcompounds comprising a long-chain C26 dicarboxylic acid that acylates terminal l-valine and... -
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... -
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,... -
Enantioselective Direct Aza Hetero-Diels−Alder Reaction Catalyzed by Chiral B...
The first chiral Brønsted acid-catalyzed asymmetric direct aza hetero-Diels−Alder reaction has been described. The phosphoric acids, prepared from binol and H8-binol... -
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... -
Bent Ladder-Type Hexaphenylene with Carbazole Core and Spiro Linkage as Stabl...
A bent ladder-type hexaphenylene with a carbazole core and spiro-linkage is designed and synthesized by using the ortho-linked spirobifluorene. The design eliminates the... -
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... -
Carbon Nanotube Salts. Arylation of Single-Wall Carbon Nanotubes
Carbon nanotube salts prepared by treating single-wall carbon nanotubes (SWNTs) with lithium in liquid ammonia react readily with aryl iodides to give SWNTs functionalized by... -
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... -
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... -
Spectroscopy and Electrochemistry of Ruthenium-Modified Nucleic Acids: Design...
Electron transfer (ET) reactions through DNA have been the subject of numerous investigations due to the implications for light-induced DNA damage and the quest for... -
Chiral Arylaminophosphonium Barfates as a New Class of Charged Brønsted Acid ...
Heterochiral [7.7]-P-spirocyclic arylaminophosphonium barfates have been designed as a novel charged, cationic Bronsted acid catalyst, and their catalytic and stereocontrolling... -
A Direct Preparation of N-Unsubstituted Pyrrole-2,5-dicarboxylates from 2-Azi...
A new and easy method for synthesis of symmetric pyrrole-2,5-dicarboxylate derivatives via a simple titanium(IV)-mediated oxidative dimerization of 2-azidocarboxylic esters is...
