天气
发表于 2025-3-25 03:30:54
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formula
发表于 2025-3-25 08:37:20
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使痛苦
发表于 2025-3-25 13:37:48
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不规则
发表于 2025-3-25 15:53:21
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进入
发表于 2025-3-25 20:12:32
Recoverable, Soluble Polymer-Supported Organic Catalysts, ligands and catalysts. This chapter highlights the more recent results obtained by our group in the field of poly(ethylene glycol) (PEG)-supported chiral and achiral organic catalysts. A few considerations on the methodologies, the future and the problems related to the immobilization of chiral organic catalysts are also briefly discussed.
COM
发表于 2025-3-26 01:55:35
Organocatalysis by Hydrogen Bonding Networks,ctones, affording enantiomerically pure α-amino acids; and kinetic resolution of oxazinones, affording enantiomerically pure β-amino acids. All four types of transformations are of preparative value, and their mechanisms are discussed.
cluster
发表于 2025-3-26 06:27:45
,-Heterocyclic Carbenes: Organocatalysts Displaying Diverse Modes of Action,erocyclic carbenes, depending on their properties, has led to the development of several unprecedented catalytic reactions. This article will provide an overview of the versatile reactivity of .-heterocyclic carbenes.
Morbid
发表于 2025-3-26 10:06:47
Chiral Organocatalysts for Enantioselective Photochemical Reactions,its almost quantitative recovery and its reuse, it has so far been used in a catalytic sense only in a single case. For the development of photochemical organocatalysts it was proposed to prepare modified templates, in which a light-collecting device acts simultaneously as sensitiser and as a steric
delta-waves
发表于 2025-3-26 14:56:01
,New Developments in Enantioselective Brønsted Acid Catalysis: Chiral Ion Pair Catalysis and Beyond,ctivation of an electrophile or nucleophile by use of a chiral Brønsted acid. Compared to amino-, carbene-, pyridine- and hydrogen-bonding catalyzed transformations, enantioselective Brønsted acid catalysis has only recently emerged as important and promising area of research. In the course of our r
Lacerate
发表于 2025-3-26 17:19:31
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