Results 1 to 10 of about 4,197,741 (336)

Manganese(I)-Catalyzed Cross-Coupling of Ketones and Secondary Alcohols with Primary Alcohols [PDF]

ACS Omega, 2019
Catalytic cross-coupling of ketones and secondary alcohols with primary alcohols is reported. An abundant manganese-based pincer catalyst catalyzes the reactions.
Suhas Shahaji Gawali, Biplab Keshari Pandia, Souvik Pal, Chidambaram Gunanathan   +3 more
doaj   +3 more sources

Catalytic Cross-Coupling of Secondary Alcohols

Journal of the American Chemical Society, 2019
Herein, an unprecedented ruthenium(II) catalyzed direct cross-coupling of two different secondary alcohols to β-disubstituted ketones is reported. Cyclic, acylic, symmetrical, and unsymmetrical secondary alcohols are selectively coupled with aromatic benzylic secondary alcohols to provide ketone products.
Subramanian Thiyagarajan, Chidambaram Gunanathan   +1 more
semanticscholar   +5 more sources

Deoxygenative Borylation of Secondary and Tertiary Alcohols [PDF]

Angewandte Chemie International Edition, 2019
AbstractTwo different approaches for the deoxygenative radical borylation of secondary and tertiary alcohols are presented. These transformations either proceed through a metal‐free silyl‐radical‐mediated pathway or utilize visible‐light photoredox catalysis. Readily available xanthates or methyl oxalates are used as radical precursors.
Florian W. Friese, Armido Studer
semanticscholar   +5 more sources

Nickela-electrocatalyzed C-H Alkoxylation with Secondary Alcohols: Oxidation-Induced Reductive Elimination at Nickel(III). [PDF]

Angew Chem Int Ed Engl, 2020
Nickela‐electrooxidative C−H alkoxylations with challenging secondary alcohols were accomplished in a fully dehydrogenative fashion, thereby avoiding stoichiometric chemical oxidants, with H2 as the only stoichiometric byproduct.
Zhang SK, Struwe J, Hu L, Ackermann L.
europepmc   +2 more sources

Improved Process for the Palladium-Catalyzed C-O Cross-Coupling of Secondary Alcohols. [PDF]

Org Lett, 2020
An improved protocol for the Pd-catalyzed C-O cross-coupling of secondary alcohols is described. The use of biaryl phosphine L2 as the ligand was key to achieving efficient cross-coupling of (hetero)aryl chlorides with only a 20% molar excess of the ...
Zhang H, Ruiz-Castillo P, Schuppe AW, Buchwald SL.   +3 more
europepmc   +2 more sources

CALB Immobilized onto Magnetic Nanoparticles for Efficient Kinetic Resolution of Racemic Secondary Alcohols: Long-Term Stability and Reusability [PDF]

Molecules, 2019
In this study, an immobilization strategy for magnetic cross-linking enzyme aggregates of lipase B from Candida antarctica (CALB) was developed and investigated. Magnetic particles were prepared by conventional co-precipitation.
Xiu Xing, Jun-Qi Jia, Jing-Fan Zhang, Zi-Wen Zhou, Jun Li, Na Wang, Xiao-Qi Yu   +6 more
doaj   +2 more sources

Scientific Opinion on Flavouring Group Evaluation 7, Revision 5 (FGE.07Rev5): saturated and unsaturated aliphatic secondary alcohols, ketones and esters of secondary alcohols and saturated linear or branched-chain carboxylic acids from chemical group 5. [PDF]

EFSA J, 2017
Acknowledgements: The Panel wishes to thank the members of the Working Group on Flavourings: Ulla Beckman Sundh, Leon Brimer, Karl-Heinz Engel, Paul Fowler, Rainer Gürtler, Trine Husøy, Wim Mennes and Gerard Mulder for the preparatory work on this ...
EFSA Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids (CEF), Silano V, Bolognesi C, Castle L, Cravedi JP, Engel KH, Fowler P, Franz R, Grob K, Gürtler R, Husøy T, Kärenlampi S, Milana MR, Penninks A, Tavares Poças MF, Smith A, Tlustos C, Wölfle D, Zorn H, Zugravu CA, Beckman Sundh U, Brimer L, Mosesso P, Mulder G, Anastassiadou M, Mennes W.   +27 more
europepmc   +5 more sources

Determination of the Absolute Configuration of Secondary Alcohols in a Compound Mixture via the Application of Competing Enantioselective Acylation Coupled with LC/MS Analysis [PDF]

Pharmaceutics
The determination of natural product stereochemistry plays a significant role in drug discovery and development. Understanding the stereochemistry of natural products is essential for predicting and optimizing their interactions with biological targets ...
Bum Soo Lee, Hoon Kim, Jiwon Baek, Rhim Ryoo, Seoung Rak Lee, Ki Hyun Kim   +5 more
doaj   +2 more sources

Mechanically induced oxidation of alcohols to aldehydes and ketones in ambient air: Revisiting TEMPO-assisted oxidations [PDF]

Beilstein Journal of Organic Chemistry, 2017
The present work addresses the development of an eco-friendly and cost-efficient protocol for the oxidation of primary and secondary alcohols to the corresponding aldehydes and ketones by mechanical processing under air. Ball milling was shown to promote
Andrea Porcheddu, Evelina Colacino, Giancarlo Cravotto, Francesco Delogu, Lidia De Luca   +4 more
doaj   +4 more sources

Intramolecular substitutions of secondary and tertiary alcohols with chirality transfer by an iron(III) catalyst

Nature Communications, 2019
The direct substitution of the OH group of stereogenic alcohols are reported rarely in literature. Here, the authors demonstrate direct substitution of both secondary and tertiary alcohols with chirality transfer leading to enantioenriched 5-membered, 6 ...
Rahul A. Watile, Anon Bunrit, Jèssica Margalef, Sunisa Akkarasamiyo, Rabia Ayub, Emi Lagerspets, Srijit Biswas, Timo Repo, Joseph S. M. Samec   +8 more
doaj   +2 more sources