Nghĩa của từ nucleophile bằng Tiếng Việt

danh từ
chất cho electron (trong phản ứng hóa học)

Đặt câu có từ "nucleophile"

1. The Aluminyl anion: a new generation of aluminium nucleophile

2. The Aluminyl Anion: A New Generation of Aluminium Nucleophile

3. This unusual salt has some uses in organic chemistry as a base and nucleophile.

Muối không thông dụng này có vài ứng dụng trong hóa hữu cơ như một bazơ và chất ái nhân nucleophin.

4. This synopsis highlights and discusses recent advances on use of vinyl Azides in chemical synthesis as a radical acceptor and an enamine-type nucleophile.

5. Sodium Azide is used as a source of Azide anion which is a strong nucleophile that readily displaces suitable leaving groups

6. Aldol condensations, even with ketones, can occur under acid conditions where the active nucleophile is the enol, not the enolate ion

7. S N 2 - Nucleophilic Substitution, Bimolecular In the S N 2 reaction, the nucleophile attacks the carbon with the leaving group from the backside

8. The book then goes on to say that Acetylide anions are highly basic (compared to ethyl anion and methyl anion assumably) and is thus the strongest nucleophile

9. The attack by each nucleophile occurs at the carbonyl carbon farthest away from the acetoxy group to give a carbamoyl or an ester function at this position.

10. All the Aldol reactions we discussed so far were between identical partners, meaning the same carbonyl compound served as an electrophile and a nucleophile in the form of an enolate:

11. Acetals are formed on reaction between 2 molecules of an alcohol with either an aldehyde or a ketone in presence of an acid because alcohol is a weak nucleophile.

12. Although the adenosine adjacent to the branchsite adenosine is the one bulged out in the structure described here, either of these Adenosines can serve as the nucleophile in mammalian but …

13. First, an acid catalyst must be used because alcohol is a weak nucleophile; and second, the water produced with the Acetal must be removed from the reaction by a process such as a …

14. Anhydrides can be converted into esters by using an alcohol with a base or, even better, an alkoxide which is a stronger nucleophile: In a similar reaction, thioesters can be prepared from Anhydrides: Amides from

15. More generally, an Aldol addition is characterized as a nucleophilic addition to an aldehyde, ketone, or imine electrophile where the nucleophile is the a-carbon in an aldehyde, ketone, imine, ester, or thioester

16. When you react an Alkyne with a halogen in a large access of water, you will see the competition between the H 2 O and Br – for the place of a nucleophile in this reaction

17. Here we report the synthesis, structure and reaction chemistry of an anionic aluminium(uc(i)) nucleophile, the dimethylxanthene-stabilized potassium Aluminyl [K{Al(NON)}] 2 (NON = 4,5-bis(2,6-diisopropylanilido)-2,7-di-tert-butyl-9,9-dimethylxanthene)

18. The anionic complex [Ir(2-phenylpyridine)2(benzene-1,2-dithiolate)]− ([IrSS]−) is a nucleophile and metalloligand that reacts with methyl iodide and AuPR3+ (R = Ph or Et) to form S-methylated complexes (thiother–thiolate and dithiother complexes) and S-Aurated complexes, respectively

19. The Acetylide carbanion is a good C nucleophile and can undergo nucleophilic substitution reactions (usually S N 2) with 1 o or 2 o alkyl halides (Cl, Br or I) which have electrophilic C to produce an internal alkyne

20. Another important reaction of a carbon nucleophile with an aldehyde is the Aldol reaction (also called Aldol condensation), which takes place when any aldehyde possessing at least one α-hydrogen is treated with sodium hydroxide or sometimes with another base.

21. Transition-state structures for the carbocation–nucleophile combination reactions of (4-substituted-4'- methoxydiphenyl)methyl cations with water, chloride, and bromide ions in acetonitrile–water mixtures have been investigated by measuring the secondary a-deuterium kinetic and equilibrium isotope effects.

22. The pre-mRNA branch point sequence (BPS) Anneals with a pseudouridine-modified region of the U2 small nuclear (sn)RNA, and offers a 2' hydroxyl group of a bulged adenosine as the nucleophile for the first catalytic step of pre-mRNA splicing

23. The first- and second-generation EGFR-TKIs both have Anilino (blue square)-quinazoline (red square) structures.However, the second-generation TKIs also have an acrylamide group (orange square), which serves as a chemically reactive Michael acceptor electrophile that targets a cysteine nucleophile (Cys797), resulting in a covalent adduct.

24. What I want to do in this video is differentiate between the ideas of nucleophilicity nucleo Felicity or how strong fearless city or how strong of a nucleophile something is and Basicity and Basicity and these the difference is on one level kind of subtle but it's actually a very big difference and I'll show you why it's kind of confusing the first time you learn it when we studied sn2