Results 181 to 190 of about 33,099 (286)

Bent N‐Heterocyclic Allenes From a Well‐Defined Titanium Vinylidene Complex

Angewandte Chemie, EarlyView.
The syntheses and the structures of N‐heterocyclic allenes are reported. Allenes bearing fluorenylidene capping groups show markedly bent C═C═C units, a carbene‐like reactivity, and they can act as potent C‐donor ligands for metal complexes. ABSTRACT Allenes typically display a linear geometry. A notable exception occurs in allenes bearing two electron‐
Bastiaan Kooij, Damien W. Chen, Rosario Scopelliti, Farzaneh Fadaei‐Tirani, Kay Severin   +4 more
wiley   +2 more sources

A facile preparation method for homogeneous Ir catalysts for dehydrogenation and hydrogenation reactions involving N-heteroarenes. [PDF]

RSC Adv
Lin X, Zhang Y, Feng W, Li Q, Xi Y.
europepmc   +1 more source

Iterative Synthesis of Pentacene Derivatives with Continuous Boron–Oxygen Bonds

Angewandte Chemie, EarlyView.
An iterative synthetic strategy enables the controlled introduction of continuous multiple B–O bonds at the zigzag edge of acenes. A simple two‐step cycle—ipso iodination and Suzuki cross‐coupling/condensation—efficiently constructs BO‐acenes ranging from naphthalene to pentacene.
Seonghwa Jeong, Si‐In Kim, Jonghwan Lee, Hwon Kim, Jinuk Jang, Jiyeon Kim, Wonyoung Choe, Seung Kyu Min, Young S. Park   +8 more
wiley   +2 more sources

Simple s-block metal hydrides for selective hydrogenation of quinoline compounds. [PDF]

Chem Sci
Zhang S, Wen H, Wang Q, Cai Y, Li Z, Liu L, Chang X, Guo J, Chen P.   +8 more
europepmc   +1 more source

Strategies Toward Accessing Enantioenriched (Hetero)Benzo‐Fused 5‐ and 6‐ Membered Rings via Intermolecular Carbometalation

Angewandte Chemie, EarlyView.
The use of transition‐metal catalysts and design of chiral ligands have allowed chemists to access highly functionalized benzofused 5‐ and 6‐ membered rings in high yield and enantioselectivity. A common strategy used relies on an intermolecular carbometalation across alkynes and olefins, usually followed by a subsequent intramolecular carbometalation.
Clara Jans, Armaan Grewal, Xavier Abel‐Snape, Mark Lautens   +3 more
wiley   +2 more sources

CO₂ hydrogenation toward toluene methylation for selective para-xylene synthesis. [PDF]

Nat Commun
Tian J, Xi Y, Cheng J, Zhang J, Wang H, Ren F, Yuan J, He C, Yang H, Liu C, Li Z, Li C.   +11 more
europepmc   +1 more source

Alcohol‐Directed Carboamination of Conjugated Enynes

Angewandte Chemie, EarlyView.
The first general three‐component intermolecular Pd‐catalyzed carboamination of conjugated enynes enables the coupling of anilines and aryl triflates to produce functionalized allenic amines, utilizing a native alcohol directing group to control regioselectivity.
Helena Solé‐Àvila, Duncan K. Brownsey, Hugo Senelle, Jerome Waser   +3 more
wiley   +2 more sources

Cooperation-Enhanced N-H···π Hydrogen Bonds: Liquid Pyrrole and Its Mixture with Benzene. [PDF]

J Phys Chem Lett
Sella A, Wilson M, Novoveska M, Headen TF, Clancy AJ, Skipper NT, Di Mino C.   +6 more
europepmc   +1 more source

1,4‐Digermacyclopenta‐1,3‐diene: Continuous Cyclic σ*–π Delocalization Enables Aromatic Stabilization in a Heavy‐Element 4π System

Angewandte Chemie, EarlyView.
A five‐membered digermacycle exhibits an unusual 4π electron delocalization enabled by σ*(Ge–C)–π coupling within a nearly planar framework. Combined experimental and theoretical analyses reveal a continuous cyclic delocalization pathway, highlighting σ*–π interactions as a design principle for aromatic stabilization beyond classical π‐conjugated ...
Daichi Uchida, Hiroko Yamada, Yoshiyuki Mizuhata   +2 more
wiley   +2 more sources

Selective Synthesis of Chiral Carbocycles by Iridium-Catalyzed Asymmetric Mono-, Double-, or Triple Hydrogenation of Cyclic Dienones. [PDF]

Org Lett
Peters BBC, Zheng J, Zhang H, Andersson PG.   +3 more
europepmc   +1 more source