Asymmetric catalysis. Asymmetric catalytic intramolocular hydrosilation and hydroacylation
نویسندگان
چکیده
منابع مشابه
Asymmetric Catalysis.
H ighlighting this issue of PNAS and the forthcoming one* is a Special Feature comprising 8 Perspectives and 44 research articles that cover aspects of asymmetric catalysis, the phenomenon whereby a chiral catalyst promotes the conversion of an achiral substrate to a chiral product with a preference for the formation of one of the mirror image isomers (enantiomers). The demand for chiral compou...
متن کاملThe first catalytic asymmetric thioacetalization by chiral phosphoric acid catalysis.
We report here the first catalytic asymmetric thioacetalization of salicylaldehyde and dithiol. Chiral phosphoric acid STRIP C5 is identified as a powerful catalyst for this reaction to afford various chiral dithioacetals in high to excellent yields and enantioselectivities under mild conditions.
متن کاملSequential column asymmetric catalysis.
Since the introduction of catalysts and reagents on solid-support, researchers have developed new reaction systems to take advantage of their insoluble nature by designing multistep reaction sequences, high-throughput purification techniques, and combinatorial synthesis methods. The continuous flow system is one of these advancements and represents the foundation of a new technique termed seque...
متن کاملStrategies in asymmetric catalysis
The stereochemistry of an organic compound can have a profound influence on many of its most important properties. For example, the enantiomeric forms of a drug molecule can have completely different biological effects, and polymers that differ only in the stereochemistry of their backbones can have quite dissimilar macroscopic physical characteristics. Control over the stereochemical outcome o...
متن کاملHeterogeneous asymmetric catalysis*
Examples of enantioselective catalysts, including homogeneous supported catalysts and biphasic liquid/liquid, are described and compared. In the case of asymmetric hydride transfer, polythiourea was proven to be more efficient for ruthenium-catalyzed reduction of aryl ketones, although the iridium complexes gave rise to higher ee when using amino sulfonamide bound to a polystyrene matrix. In th...
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ژورنال
عنوان ژورنال: Tetrahedron
سال: 1994
ISSN: 0040-4020
DOI: 10.1016/s0040-4020(01)89370-4