例句與造句

1. In alkene radicals proton abstraction to an alkyne is preferred.
2. In the Birch reduction, the secondary reaction is proton abstraction from an alcohol.
3. To be specific, it is involved in the cofactor-assisted proton abstraction from the substrate molecule.
4. In the negative mode, however, the ions are produced by either proton abstraction or adduct formation.
5. It acts as a nucleophile, facilitates proton abstraction, and is also the leaving group in the final step.
6. It's difficult to find proton abstraction in a sentence. 用proton abstraction造句挺難的
7. The aldimine undergoes proton abstraction at the ?-carbon followed by elimination to generate an amino-acrylate intermediate.
8. The resulting enolate attacks CO 2 to form malonyl CoA . In a competing mechanism, proton abstraction is concerted with the attack of acetyl CoA.
9. The carbanion forms by proton abstraction of the acidic ?-proton by pyridine ( now serving a double role ) akin to the Knoevenagel condensation.
10. Enzymes alter the electronic structure by protonation, proton abstraction, electron transfer, geometric distortion, hydrophobic partitioning, and interaction with Lewis acids and bases.
11. Interestingly, regardless of the solvents the KIE were found to be greater than 2, indicating the relevance of proton abstraction in the rate-determining step.
12. Combustion of hydrocarbons is thought to be initiated by hydrogen atom abstraction ( not proton abstraction ) from the fuel to oxygen, to give a hydroperoxide radical ( HOO ).
13. Recent mutagenic studies of ASL homologues have shown that Histidine 162 or Threonine 161 of ASL is responsible for the proton abstraction of the C?, either directly or indirectly through a water molecule.
14. In the first step an azido compound is formed in situ in a nucleophilic attack of a second azide ion on this alkene with more double bond rearrangements and proton abstraction from a proton source.
15. The Bronsted acid remains hydrogen-bonded to the resulting enolate in the enolate-addition step to the aldehyde, and finally ensures efficient proton transfer in the rate-determining proton abstraction step.
16. Sulfur tetrazole radical derived from photolysis of disulfide and carbon radical derived from photolysis of t-butyl peroxide followed by proton abstraction from triethylamineWhen reactivity-selectivity relationships do exist they signify different reaction modes.
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