Skip to Content

尊敬的客户:

目前国际形势复杂多变,关税政策尚不明朗,这可能对我们的产品价格产生一定影响。在此情况下,我们希望就订单事宜与您进行友好沟通。

基于当前的不确定性,如果您选择在此期间下单,我们将保留根据实际情况调整价格的权利。同时,我们也理解市场变化可能给您带来的困扰,因此如果在订单实际发货前因关税政策变动导致价格出现较大波动,默克将与您进行协商讨论并视情况对订单进行调整或取消。

关于应对近期政策变化的重要更新,请点击此处查看详情。

Merck
CN

Organocatalysts

MacMillan’s Imidazolidinone OrganoCatalysts used for organocatalytic transformations such as 1,3-dipolar cycloadditions, Friedel-Crafts alkylations, α-chlorinations, α-fluorinations, and intramolecular Michael reactions.

Organocatalysts, small molecules composed of carbon, hydrogen, oxygen, nitrogen, sulphur, or phosphine that activate a chemical reaction, have become an indispensable component in the green chemistry toolbox. While all catalysts are sustainable in general, organic catalysts go beyond the 12 principles of green chemistry. Organocatalysts can reduce the number of synthetic steps required to determine a target compound since they react with various functional groups under mild conditions that are not air- or water-sensitive, which saves energy and reduces costs. As nonmetal catalysts, these products are not harmful to the environment, are naturally nontoxic and do not produce metallic waste.

Due to their efficiency, stability, purity, and selectivity, organocatalytsts are used widely for small molecule drug discovery and in designing complex molecular structures. Some common organocatalytic reactions that uses organocatalysts are Diels-Alders, Michael, or Mannich asymmetric reactions, Shi epoxidation, 1,3-dipolar cycloadditions, Friedel-Crafts alkylations, α-chlorinations, α-fluorinations, and transfer hydrogenations. Initiation in these reactions happen through the organocatalyst either providing or removing electrons or protons from the substrate. Therefore, organocatalysts are generally classified as either Lewis bases, Lewis acids, Brønsted bases, and Brønsted acids.

Explore our portfolio of organocatalysts designed to spark your environmentally-friendly organocatalytic reactions and green chemistry explorations.


Products

Sort by Relevance
Showing 1-20 of 159
Change View
Showing 1-20 of 159
Compare
Product Number
Product Name
Product Description
Pricing
You have viewed 1-20 of 159 results




Sign In To Continue

To continue reading please sign in or create an account.

Don't Have An Account?