Show/Hide Menu
Hide/Show Apps
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Open Science Policy
Open Science Policy
Open Access Guideline
Open Access Guideline
Postgraduate Thesis Guideline
Postgraduate Thesis Guideline
Communities & Collections
Communities & Collections
Help
Help
Frequently Asked Questions
Frequently Asked Questions
Guides
Guides
Thesis submission
Thesis submission
MS without thesis term project submission
MS without thesis term project submission
Publication submission with DOI
Publication submission with DOI
Publication submission
Publication submission
Supporting Information
Supporting Information
General Information
General Information
Copyright, Embargo and License
Copyright, Embargo and License
Contact us
Contact us
Umpolung strategy: Advances in catalytic C-C bond formations
Date
2013-01-01
Author
EYMUR, Serkan
GÖLLÜ, Mehmet
Tanyeli, Cihangir
Metadata
Show full item record
This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
.
Item Usage Stats
96
views
0
downloads
Cite This
This mini-review examines the recent advances in umpolung strategy, devised originally by Corey and Seebach. Although numerous stoichiometric variants have been published to date, this article covers just the catalytic C-C bond forming reactions due to their major benefits such as atom economy, less pollution, and workable simplicity. In the context of umpolung, the studies are evaluated under 3 main titles: enzyme, N -heterocyclic carbene, and cyanide ion catalyzed reactions. In particular, enzyme and NHC catalyzed reactions mainly involve asymmetric applications.
Subject Keywords
Umpolung
,
Thiamine pyrophosphate (TPP)
,
N -heterocyclic carbene
,
Asymmetric synthesis
URI
https://hdl.handle.net/11511/36069
Journal
TURKISH JOURNAL OF CHEMISTRY
DOI
https://doi.org/10.3906/kim-1303-85
Collections
Department of Chemistry, Article
Suggestions
OpenMETU
Core
An improved all-pass watermarking scheme for speech and audio
Çiloğlu, Tolga (2000-08-02)
This paper investigates some problems encountered in the all-pass watermarking scheme developed by Yardymcy et al. [II and suggest ways to eliminate it. The system under consideration uses all-pass filters to embed data into a speech or music signal by phase modification in consecutive blocks. Some artefacts in doing so. The two approaches we suggest in this paper remove these artefacts while keeping the watermark detectable and all the advantages of the method. The results of the experimental studies relat...
Asymmetric syntheses of various novel chiral ligands with norbornene backbone : the use of chiral catalyst in asymmetric reactions
Elmalı, Olcay; Tanyeli, Cihangir; Department of Chemistry (2005)
The synthetic strategy of this study mainly depends upon the asymmetric desymmetrization of meso norbornene type an anhydride. Asymmetric desymmetrization was achieved by using chinchona alkaloids under kinetically controlled conditions. The resultant mono ester carboxylic acid was epimerized to trans configuration. Subsequent esterification followed by lithium aluminum hydride reduction afforded the first chiral diol ligand with 98 % ee. Transformation of diol to corresponding trans diamine was achieved vi...
Imitation of human body poses and hand gestures using a particle based fluidics method
Tilki, Umut; Erkmen, İsmet; Erkmen, Aydan Müşerref; Department of Electrical and Electronics Engineering (2012)
In this thesis, a new approach is developed, avoiding the correspondence problem caused by the difference in embodiment between imitator and demonstrator in imitation learning. In our work, the imitator is a fluidic system of dynamics totally different than the imitatee, which is a human performing hand gestures and human body postures. The fluidic system is composed of fluid particles, which are used for the discretization of the problem domain. In this work, we demonstrate the fluidics formation control s...
Optical Tactics for Spatial Justice in the Works of Forensic Architecture and Hito Steyerl
Oskay, H. Esra (ODTÜ Mimarlık Fakültesi, 2022-6-31)
Görselleştirme teknolojilerinin tarihi, içinde yaşadığımız dünyayı anlamak ve düzene sokmak çabasında dünyayı resmetmek için gösterilen amansız çabaya işaret eder. Dünyayı görselleştirme becerisi, hayatta kalma ve kontrol için önemli bir stratejidir, bununla birlikte bize bu olanağı sağlayan teknolojiler bir görme asimetrisi içinde yönetilir. Zemin gerçekliği üzerinde doğrudan etkileri olan teknik görüntülerin erişilebilirliği yasal düzenlemeler tarafından desteklenen her şeyi gören gücün bakışı tarafından ...
An Analysis on McGinn’s Mysterianism: Reply to Erhan Demircioglu
Işıkgil, Sena (2017-02-01)
This paper discusses Erhan Demicioglu’s approach to McGinn’s mysterianism. Demircioglu argues that the reasons why McGinn considers his cognitive closure idea to be true with respect to the solution of the mind-brain problem are not compatible with his claim about the existence of a naturalist solution to the mind-brain problem. However, I consider such a criticism to be the result of missing some important details in McGinn’s thesis on cognitive closure. In this study by analysing McGinn’s mysterianism I s...
Citation Formats
IEEE
ACM
APA
CHICAGO
MLA
BibTeX
S. EYMUR, M. GÖLLÜ, and C. Tanyeli, “Umpolung strategy: Advances in catalytic C-C bond formations,”
TURKISH JOURNAL OF CHEMISTRY
, pp. 586–609, 2013, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/36069.