Results 101 to 110 of about 12,716 (277)

Chiral Heptagon‐Embedded Double [6]Helicenes via Scholl Reaction

Angewandte Chemie, Volume 138, Issue 16, 13 April 2026.
One bond makes the difference–two chiral and twisted polycyclic aromatic hydrocarbons (PAHs) show different emission behavior. The more flexible one (top) shows a double emission with one having a large anti‐Stokes shift. The two peaks are assigned to different conformers of one and the same compound.
Dan Wang, Philipp Penert, Lars Schneider, Moritz P. Schuldt, Frank Rominger, Felix Deschler, Michael Mastalerz   +6 more
wiley   +2 more sources

Tris(2,4,6-trifluorophenyl)borane: an efficient hydroboration catalyst [PDF]

, 2017
The metal-free catalyst tris(2,4,6-trifluorophenyl)borane has demonstrated its extensive applications in the 1,2-hydroboration of numerous unsaturated reagents, namely alkynes, aldehydes and imines, consisting of a wide array of electron-withdrawing and ...
Lawson, James, Melen, Rebecca, Wilkins, Lewis   +2 more
core   +2 more sources

Iron‐Mediated Electrochemical Cyclopropanation of Borodiiodomethane with Alkenes†

Chinese Journal of Chemistry, Volume 44, Issue 10, Page 1565-1572, 15 May 2026.
This work describes an electrochemical iron‐mediated cyclopropanation of borodiiodomethane with alkenes, resulting in the formation of boro‐substituted cyclopropanes. A key feature of this study is the unexpected discovery that the cathodically generated iron ion coordinates with a biquinoline ligand in situ, facilitating the electrochemical ...
Jie Li, Yingying Pan, Xin Wang, Xuefeng Tan   +3 more
wiley   +1 more source

Atropselective syntheses of (-) and (+) rugulotrosin A utilizing point-to-axial chirality transfer [PDF]

, 2015
Chiral, dimeric natural products containing complex structures and interesting biological properties have inspired chemists and biologists for decades.
A Zask, Anne C. Meister, B Franck, BB Liau, BH Lipshutz, CA Broka, CE Müller, CF Nising, DA Evans, F Guo, G Bringmann, G Bringmann, G Xu, GA Molander, GP Moss, H Kikuchi, H Kikuchi, J Clayden, JM Wilson, John A. Porco, K-S Masters, KC Nicolaou, LC Konkol, LF Tietze, LF Tietze, LF Tietze, M Stewart, MC Kozlowski, NC Bruno, NZ Burns, PS Steyn, R Martin, Richard P. Johnson, Robert J. Capon, RS Coleman, S Huang, S Little, S Masamune, Sarah L. Skraba-Joiner, SR LaPlante, T Gensch, T Hamada, T Qin, T Qin, T Wezeman, TE Barder, Tian Qin, VB Birman, W Tang, X Shen, Y Zhou, Y Zhou, YS Park, Zeinab G. Khalil   +53 more
core   +2 more sources

Pd‐Catalyzed C─C Bond Borylation of Biphenylenes Leading to Tri‐Ortho‐Substituted Biaryls

Chemistry – A European Journal, Volume 32, Issue 16, 25 April 2026.
Palladium‐catalyzed ring‐opening C─C borylation of 1‐substituted biphenylenes yields a range of o,o,o′‐trisubstituted biaryls with two ortho‐boryl groups via selective cleavage of the least hindered C─C bond. The resulting diborylated products are readily amenable to sequential, site‐selective postfunctionalization.
Robyn V. Presland, Konstantin V. Luzyanin, Luke A. Wilkinson, Oliver L. Jacobs, Nathan R. Halcovitch, Alexey G. Sergeev   +5 more
wiley   +1 more source

Iridium-catalysed regioselective borylation of carboranes via direct B–H activation

Nature Communications, 2017
Functionalization of the multiple, similar, boron-hydrogen bonds in carboranes is difficult to achieve with selectivity. Here the authors report an iridium-catalysed borylation ofo-carboranes with high yields and regioselectivities.
Ruofei Cheng, Zaozao Qiu, Zuowei Xie
doaj   +1 more source

Quadruple C-H activation coupled to hydrofunctionalization and C-H silylation/borylation enabled by weakly coordinated palladium catalyst

Nature Communications, 2020
Combining the Heck reaction with other transformations provides a powerful strategy to access diverse, complex compounds. Here, the authors report a weak coordination dominated Pd(0)-catalyzed quadruple C-H activation followed by hydro-functionalization,
Bo-Cheng Tang, Wen-Xuan Lin, Xiang-Long Chen, Cai He, Jin-Tian Ma, Yan-Dong Wu, Yu Lan, An-Xin Wu   +7 more
doaj   +1 more source

Synthetic Implications of Spin States in the Reactivity of Ni Intermediate Complexes in Coupling Reactions

European Journal of Organic Chemistry, Volume 29, Issue 16, 25 April 2026.
The formation of triplet Ni(II) complexes by activation of bromoalkenes with alkyl‐ or boryl Ni(I) is key to control the outcome of the reductive cross‐coupling of bromoalkanes precluding the formation of alkylboronates. We present a mechanistic study on the Ni‐catalyzed cross‐coupling reaction of bromoalkanes with diboron compounds as reductants.
Diego J. Cárdenas
wiley   +1 more source

Trialkoxysilane-Induced Iridium-Catalyzed para-Selective C–H Bond Borylation of Arenes

Nature Communications
An ideal approach for the construction of aryl boron compounds is to selectively replace a C–H bond in arenes with a C–B bond, and controlling regioselectivity is one of the most challenging aspects of these transformations.
Guodong Ju, Zhibin Huang, Yingsheng Zhao
doaj   +1 more source

Ion Pairing-Driven Approach to Control Regioselectivity in Aromatic C(sp²)-H Borylation

, 2021
Naoki Yasukawa
openalex   +2 more sources