Results 111 to 120 of about 2,677,083 (277)

Enantioselective Synthesis of Endohedral Metallofullerenes

Journal of the American Chemical Society, 2011
Endohedral metallofullerenes are promising materials in biomedical and material sciences. In particular, they are of interest as agents for magnetic resonance imaging (MRI), photovoltaic devices, and semimetallic components. The synthesis of chiral endofullerenes represents one step further in the potential use of these carbon allotropes; however, this
Sawai K., Takano Y., Izquierdo M., Filippone S., Martín, Nazario, Slanina Z., Mizorogi N., Waelchli M., Tsuchiya T., Akasaka T., Nagase S.   +10 more
openaire   +3 more sources

Z‐Retentive Enantioselective Rh‐Catalyzed Hydroarylation of E,Z‐Dienes

Angewandte Chemie, EarlyView.
The Rh‐catalyzed hydroarylation of conjugated E,Z‐dienoates is found to proceed with high selectivity for addition to the E‐alkene unit. Mechanistic analysis of this Z‐retentive process points towards preferred binding of the E‐alkene unit to a Rh‐aryl species to give rise to the observed selectivity and that Rh‐enolate protonolysis to be turnover ...
Wesley McNutt, Hima Kozhummal, Abdullah Al‐Mashqbeh, Alex Brown, Rylan J. Lundgren   +4 more
wiley   +2 more sources

Catalytic enantioselective construction of axial chirality in 1,3-disubstituted allenes

Nature Communications, 2019
Highly enantioselective synthesis of allenes has been relying, so far, on the steric hindrance of substrates. Here the authors achieve excellent stereocontrol in the synthesis of chiral allenes with a palladium-DTBM-SEGPHOS catalytic system in a non ...
Shihua Song, Jing Zhou, Chunling Fu, Shengming Ma   +3 more
doaj   +1 more source

Enantioselective Synthesis of (+)- and (−)-Dihydroepiepoformin and (+)-Epiepoformin

Organic Letters, 2005
[reaction: see text] The enantioselective synthesis of both enantiomers of dihydroepiepoformin (1) and (+)-epiepoformin (2) was achieved from (p-tolylsulfinyl)methyl-p-quinols (SR)- or (SS)-3 and (4R,SR)-4, respectively. Key features include the stereocontrolled conjugate addition of AlMe3 to p-quinol 3 and retrocondensation to the ketone functionality,
Carreño, M. Carmen, Merino, Estíbaliz, Ribagorda, Maria, Somoza, Álvaro, Urbano, Antonio   +4 more
openaire   +3 more sources

Enantioselective Synthesis of Sulfinamidines via Asymmetric Nitrogen Transfer from N-H Oxaziridines to Sulfenamides [PDF]

Sulfinamidines are promising aza-SIV chiral building blocks in asymmetric synthesis and drug discovery. However, no report has documented their enantioselective synthesis.
Marc, Fimm, Fumito, Saito
core   +2 more sources

Chiroptical Switching by Stereoselective Photochemical Sigmatropic Rearrangements: Experimental Realization of Calderoselectivity

Angewandte Chemie, EarlyView.
Calderoselectivity is established as a stereochemical principle for sigmatropic rearrangements. A homoannulene‐based chiroptical photoswitch undergoes a photochemical [1,11] sigmatropic rearrangement with control of the acyl movement on top of the cyclic π system.
Anne Krenkel, Frederike Beyer, Malte Feßner, Trung Tran Ngoc, Tobias Rüffer, Dominik Hornig, Martin Breugst, Christian Merten, Johannes F. Teichert   +8 more
wiley   +2 more sources

Enantioselective Synthesis of Optically Active Carbocyclic Sugars

, 2016
Enantioselective Synthesis of Optically Active Carbocyclic ...
Nicholas Gathergood (1803943), Karl Anker Jørgensen (1287900), Kristian Rahbek Knudsen (1587814)   +2 more
core   +2 more sources

Enantioselective synthesis of chiroplasmonic helicoidal nanoparticles by nanoconfinement in chiral dielectric shells

Nature Communications
Helicoid metal nanoparticles with intrinsic chirality have unveiled tailorable properties and unlocked many chirality-related applications across various fields.
Xiaoxi Luan, Yu Tian, Fengxia Wu, Lu Cheng, Minghua Tang, Xiali Lv, Haili Wei, Xiaodan Wang, Fenghua Li, Guobao Xu, Wenxin Niu   +10 more
doaj   +1 more source

Algicidal lactones from the marine Roseobacter clade bacterium Ruegeria pomeroyi

Beilstein Journal of Organic Chemistry, 2012
Volatiles released by the marine Roseobacter clade bacterium Rugeria pomeroyi were collected by use of a closed-loop stripping headspace apparatus (CLSA) and analysed by GC–MS.
Ramona Riclea, Julia Gleitzmann, Hilke Bruns, Corina Junker, Barbara Schulz, Jeroen S. Dickschat   +5 more
doaj   +1 more source

Formal total syntheses of classic natural product target molecules via palladium-catalyzed enantioselective alkylation

Beilstein Journal of Organic Chemistry, 2014
Pd-catalyzed enantioselective alkylation in conjunction with further synthetic elaboration enables the formal total syntheses of a number of “classic” natural product target molecules. This publication highlights recent methods for setting quaternary and
Yiyang Liu, Marc Liniger, Ryan M. McFadden, Jenny L. Roizen, Jacquie Malette, Corey M. Reeves, Douglas C. Behenna, Masaki Seto, Jimin Kim, Justin T. Mohr, Scott C. Virgil, Brian M. Stoltz   +11 more
doaj   +1 more source