例句與造句

1. The dioxindole is a strong nucleophile for the Michael addition of dioxindoles to nitroalkenes in order to obtain 3, 3-disubstituted oxindole derivatives.
2. Mesna concentrates in the bladder where acrolein accumulates after administration of chemotherapy and through a Michael addition, forms a conjugate with acrolein and other urotoxic metabolites.
3. The C8a-C14 bond is formed in the first step followed by a Michael addition of the other phenolic group to the newly formed enone group.
4. One example is the asymmetric synthesis of the drug warfarin ( in equilibrium with the hemiketal ) in a Michael addition of 4-hydroxycoumarin and benzylideneacetone:
5. The stereochemical outcome is consistent with a twisted Mannich-type reactions, ene reaction, Michael addition, Nazarov cyclization, and hetero-Diels-Alder reaction.
6. It's difficult to find michael additions in a sentence. 用michael additions造句挺難的
7. It was synthesized under the hypothesis that a polyanionic cyclization ( double Michael addition followed by aldol condensation ) would allow access to a tetracyclic intermediate with the desired functionality.
8. Like the aldol addition, the Michael reaction may proceed via an enol, silyl enol ether in the Mukaiyama-Michael addition, or more usually, enolate nucleophile.
9. The acidity of the ?-hydrogen in carbonyl compounds crucially these compounds to participate in synthetically important C C bond-forming reactions including the aldol reaction and Michael addition.
10. As you probably know, Michael addition favours soft nucleophiles because Michael acceptors are soft electrophiles, dominated by HOMO-LUMO interactions more than electrostatic interactions  basic HSAB theory.
11. A reverse Pictet-Spengler reaction cleaves the C2 C3 bond, while a subsequent Mannich reaction forms the C3 C7 bond, and a Michael addition forms the C2 C16 bond to provide dehydropreakuammicine.
12. In one study a specially designed mutant of " Candida antarctica " was found to be an effective catalyst for the Michael addition of acrolein with acetylacetone at 20 癈 in absence of additional solvent.
13. Lawsone reacts chemically with the protein known as keratin in skin and hair, in a process known as Michael addition, resulting in a strong permanent stain that lasts until the skin or hair is shed.
14. In general, for methylene bridged BOX ligands the stereochemical outcome is consistent with a twisted Mannich-type reactions, ene reaction, Michael addition, Nazarov cyclization, and hetero-Diels-Alder reaction.
15. In the Michael-aldol pathway ( "'Scheme 2 "'), The coordinated oxaloacetate enolate performs a Michael addition to the ring of the pyrone to form intermediate "'4 " '.
16. Like ethyl acrylate also methyl acrylate reacts catalysed by Lewis bases in a Michael addition with amines in high yields to ?-alanine derivatives which provide amphoteric surfactants when long-chain amines are used and the ester function is hydrolysed subsequently.
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