منابع مشابه
Asymmetric synthesis using chiral-encoded metal
The synthesis of chiral compounds is of crucial importance in many areas of society and science, including medicine, biology, chemistry, biotechnology and agriculture. Thus, there is a fundamental interest in developing new approaches for the selective production of enantiomers. Here we report the use of mesoporous metal structures with encoded geometric chiral information for inducing asymmetr...
متن کاملChiral Auxiliaries in Asymmetric Synthesis
Background The use of chiral auxiliaries in the synthesis of enantiomerically pure compounds has found wide application for a variety of reactions over the last three decades. Despite the extensive developments in this area by many academic and industrial research groups, new auxiliary controlled reactions continue to evolve frequently [1]. First objectives in this area have been to develop chi...
متن کاملSynthesis of new macrocyclic chiral manganese(III) Schiff bases as catalysts for asymmetric epoxidation.
We describe a general synthetic strategy for the preparation of a series of macrocyclic chiral manganese(III) salen complexes. The developed reaction pathway allows the modulation of the different key groups, namely, the chiral diimine, the bulky substituents in positions 3 and 3', and the linker used in the macrocyclization of the Schiff base. The different complexes presented here illustrate ...
متن کاملApplication of chiral sulfoxides in asymmetric synthesis
Over the last three decades, the sulfinyl group has received considerable attention in asymmetric synthesis1‒5 as a chiral tool. The sulfinyl group is widely used as to bring about numerous asymmetric transformations. The effectiveness of the sulfoxide in diastereoselective auxiliary-induced reactions is mainly due to the steric and stereo electronic differences existing between the substituent...
متن کاملAsymmetric synthesis mediated by chiral ligands
Chiral chelated lithium amides were designed and synthesized. Studies have been done to explore the use of these lithium amides or their corresponding amines for enantioselective reactions such as deprotonation of prochiral cyclic ketones, kinetic resolution of racemic 2-substituted cyclohexanones by deprotonation, regioselective deprotonation of optically active 3-keto steroids, alkylation of ...
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ژورنال
عنوان ژورنال: YAKUGAKU ZASSHI
سال: 1997
ISSN: 0031-6903,1347-5231
DOI: 10.1248/yakushi1947.117.10-11_800