A polysulfide material was synthesized by the direct reaction of sulfur and d-limonene, by-products petroleum citrus industries, respectively. The resulting processed into functional coatings or molded solid devices for removal palladium mercury salts from water soil. binding mercury(II) to sulfur-limonene resulted in a color change. These properties motivate application next-generation environmental remediation sensing.

An iron-catalyzed cross-coupling reaction between alkyl halides and arylboronic esters was developed that does not involve activation of the boronic ester with alkyllithium reagents nor requires magnesium additives. A combination experimental theoretical investigations revealed lithium amide bases coupled iron complexes containing deprotonated cyanobis(oxazoline) ligands were best to obtain high yields (up 89%) in catalytic reactions. Mechanistic implicate carbon-centered radical...

Abstract Carbon dioxide (CO 2 ) is an abundant C1 feedstock with tremendous potential to produce versatile building blocks in synthetic applications. Given the adverse impact of CO on atmosphere, it paramount importance devise strategies for upcycling into useful materials, such as polymers and fine chemicals. To activate stable molecule, superbases offer viable modes binding . In this study, a superbase cyclopropenimine derivative was found exhibit exceptional proficiency activating...

A mechanistic investigation of the carbohydrate/DBU cocatalyzed enantioselective diboration alkenes is presented. These studies provide an understanding origin stereoselectivity and also reveal a strategy for enhancing reactivity broadening substrate scope.

Abstract Suzuki–Miyaura cross‐coupling reactions between a variety of alkyl halides and unactivated aryl boronic esters using rationally designed iron‐based catalyst supported by β‐diketiminate ligands are described. High activity resulted in broad substrate scope that included tertiary heteroaromatic esters. Mechanistic experiments revealed the benefited from propensity for to support low‐coordinate highly reducing iron amide intermediates, which very efficient effecting transmetalation...

Herein, we describe a general and selective deprotonation functionalization reaction of tetrahydroquinolines at the 4–position using organolithiums phosphoramide ligands. In addition to development direct alkylation with primary secondary alkyl halides, Negishi cross–coupling protocol was realized afford products range aromatic halides. These methods were applied late‐stage installation into variety substrates including pharmaceuticals as well natural product analogues. The use thorough...

Abstract A polysulfide material was synthesized by the direct reaction of sulfur and d ‐limonene, by‐products petroleum citrus industries, respectively. The resulting processed into functional coatings or molded solid devices for removal palladium mercury salts from water soil. binding mercury(II) to sulfur‐limonene resulted in a color change. These properties motivate application next‐generation environmental remediation sensing.

The effects of Lewis basic phosphoramides on the aggregate structure t-BuLi have been investigated in detail by NMR and DFT methods. It was determined that hexamethylphosphoramide (HMPA) can shift equilibrium to include triple ion pair (t-Bu–Li–t-Bu)−/HMPA4Li+ which serves as a reservoir for highly reactive separated t-Bu–/HMPA4Li+. Because Li-atom's valences are saturated this pair, acidity is significantly decreased; turn, basicity maximized allowed typical directing within oxygen...

Herein we report the development of diffusion ordered NMR spectroscopy (DOSY) for its use to characterize metal complexes containing paramagnetic first row transition elements.

Abstract Carbon dioxide (CO 2 ) is an abundant C1 feedstock with tremendous potential to produce versatile building blocks in synthetic applications. Given the adverse impact of CO on atmosphere, it paramount importance devise strategies for upcycling into useful materials, such as polymers and fine chemicals. To activate stable molecule, superbases offer viable modes binding . In this study, a superbase cyclopropenimine derivative was found exhibit exceptional proficiency activating...

Purpose – The purpose of this paper is to examine the efficacy current legislative provisions that protect auditor independence in Australia. collapses several high-profile companies (Enron and WorldCom USA, HIH insurance OneTel Australia) early 2000s has raised questions about audit quality independence. In response, regulators have introduced new regulations guidance improve quality. Australia, Corporations Act 2001 (2001) was amended via Corporate Law Economic Reform Program 2004. This...

A long-standing problem in the area of organolithium chemistry has been need for a highly reactive Li-metal source that mimics Li-powders but advantage being freshly prepared from inexpensive and readily available Li-sources. Here, we report simple convenient activation method using liquid ammonia furnishes new form crystalline Li-dendrites. The Li-dendrites were shown to have ca. 100 times greater surface than conventional Li-sources created by prototypical mechanical methods. Concomitant...

Abstract Suzuki–Miyaura cross‐coupling reactions between a variety of alkyl halides and unactivated aryl boronic esters using rationally designed iron‐based catalyst supported by β‐diketiminate ligands are described. High activity resulted in broad substrate scope that included tertiary heteroaromatic esters. Mechanistic experiments revealed the benefited from propensity for to support low‐coordinate highly reducing iron amide intermediates, which very efficient effecting transmetalation...

A new air-stable catalyst for the oxidative dehydrogenation of benzylic alcohols under ambient conditions has been developed. The synthesis and characterization this compound related monomeric dimeric V(IV)- V(V)-pinF (pinF = perfluoropinacolate) complexes are reported herein. Monomeric V(IV) complex (Me4N)2[V(O)(pinF)2] (1) (μ-O)2-bridged V(V) (Me4N)2[V2(O)2(μ-O)2(pinF)2] (3a) prepared in water conditions. (Me4N)[V(O)(pinF)2] (2) may be generated via chemical oxidation 1 an inert...

Herein, we describe a general and selective deprotonation functionalization reaction of tetrahydroquinolines at the 4–position using organolithiums phosphoramide ligands. In addition to development direct alkylation with primary secondary alkyl halides, Negishi cross–coupling protocol was realized afford products range aromatic halides. These methods were applied late-stage installation into variety substrates including pharmaceuticals as well natural product analogues. The use thorough...

The selective functionalization of saturated oxygen heterocycles at positions remote to the embedded heteroatoms remains an outstanding challenge in organic synthesis. Although many methods exist for undirected replacement C–H bonds with heteroatomic subunits number site reactions introduction carbon-carbon pales comparison. This paper describes initial stages a long-term program aimed elucidating how organolithium reagents can be re-engineered selectively deprotonate and functionalize new...

A new template condensation reaction has been discovered in a mixture of Pt(II), thiobenzamide, and base. Four complexes the general form [Pt(ctaPhR)2], R = CH3 (1a), H (1b), F (1c), Cl (1d), cta condensed thioamide, have prepared under similar conditions thoroughly characterized by 1H NMR UV–vis-NIR spectroscopy, (spectro)electrochemistry, elemental analysis, single-crystal X-ray diffraction. The ligand is redox active can be reduced from initial monoanion to dianionic then trianionic...

A long-standing problem in the area of organolithium chemistry has been need for a highly reactive Li–metal source that mimics Li–powders but advantage being freshly prepared from inexpensive and readily available Li–sources. Here we report simple convenient activation method using liquid ammonia furnishes new form crystalline Li–dendrites. The Li–dendrites were shown to have ca 100 times greater surface than conventional Li–sources created by prototypical mechanical methods. Concomitant...