Results 221 to 230 of about 32,089 (279)

The Catalytic Enantioselective Sommelet-Hauser Rearrangement. [PDF]

J Am Chem Soc
El Fdali I, Laddusaw JM, Kasten K, McKay AP, Cordes DB, Cheong PH, Smith AD.   +6 more
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Enantioselective Synthesis of Euonyminol

Journal of the American Chemical Society, 2021
We describe an enantioselective total synthesis of the nonahydroxylated sesquiterpenoid euonyminol, the dihydro-β-agarofuran nucleus of the macrocyclic terpenoid alkaloids known as the cathedulins. Key features of the synthetic sequence include a highly diastereoselective intramolecular alkene oxyalkylation to establish the C10 quaternary center, an ...
Martin Tomanik, Zhi Xu, Seth B. Herzon
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Enantioselective Organocatalysis

Angewandte Chemie International Edition, 2001
The last few years have witnessed a spectacular advancement in new catalytic methods based on metal-free organic molecules. In many cases, these small compounds give rise to extremely high enantioselectivities. Preparative advantages are notable: usually the reactions can be performed under an aerobic atmosphere with wet solvents.
Peter I., Dalko, Lionel, Moisan
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Enantioselective organocatalysis

Drug Discovery Today, 2007
Enantioselective organocatalysis has emerged as a powerful synthetic paradigm that is complementary to metal-catalysed transformations and has accelerated the development of new methods to make diverse chiral molecules. The operational simplicity, ready availability of catalysts and low toxicity associated with organocatalysis makes it an attractive ...
Matthew J, Gaunt, Carin C C, Johansson, Andy, McNally, Ngoc T, Vo   +3 more
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Enantioselective Synthesis of and with Allenes.

ChemInform, 2002
AbstractFor Abstract see ChemInform Abstract in Full Text.
Anja, Hoffmann-Röder, Norbert, Krause
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Enantioselective Dihalogenation of Alkenes

Chemistry – A European Journal, 2021
AbstractThe dihalogenation of alkenes is one of the classic reactions in organic chemistry and a prime example of an electrophilic addition reaction. The often observed anti‐selectivity in this addition reaction can be explained by the formation of a haliranium‐ion intermediate.
Jonathan Bock, Sudip Guria, Volker Wedek, Ulrich Hennecke   +3 more
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Enantioselective Synthesis of (−)-Pentalenene

Organic Letters, 2007
A short, enantioselective synthesis of (-)-pentalenene is described. Catalytic enantioselective cyclopropenation with (R,R)-Rh2(OAc)(DPTI)3 was used to set the absolute stereochemistry, and an intramolecular Pauson-Khand reaction of the resulting cyclopropenyne was used to establish the quaternary center.
Mahesh K, Pallerla, Joseph M, Fox
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Enantioselective cooperative catalysis

Organic & Biomolecular Chemistry, 2015
This review focuses on enantioselective cooperative catalytic reactions, wherein two catalysts work simultaneously to form products which cannot be obtained by the use of a single catalyst alone, which have attracted considerable attention in recent years.
Suleman M, Inamdar, Valmik S, Shinde, Nitin T, Patil   +2 more
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Enantioselective Sensing by Luminescence

2010
Enantiomeric analysis is one of the crucial points for the sensor technology, due to the increasing importance that enantiomerically pure compounds and drugs have in pharmaceutic and agrochemical applications. Enantiomeric luminescent sensors give different responses by interaction or reaction with chiral molecules, allowing one to assess their optical
ACCETTA, Alessandro, CORRADINI, Roberto, MARCHELLI, Rosangela   +2 more
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