tosylates造句

例句与造句

1. It can be used in the reductive cleavage of mesylates and tosylates.
2. Nucleophilic addition into propargyl mesylates or tosylates is used to form allenylstannanes.
3. Tosylates tend to form the alkene if the reaction is done in a protic solvent in basic conditions.
4. Its palladium complexes exhibit high activity for Buchwald-Hartwig amination reactions involving aryl chlorides and aryl tosylates.
5. Both palladium and copper complexes of the compound exhibit high activity for the coupling of aryl halides and aryl tosylates with various amides.
6. It's difficult to find tosylates in a sentence. 用tosylates造句挺难的
7. They have been good ligands in Pd-catalyzed reaction of aryl chlorides and aryl vinyl tosylates with TON of 20, 000 or higher.
8. This intermediate can be converted into a terminal epoxide by usage of classical synthetical operations, such as introducing acetic acid or substitution reactions with tosylates.
9. PhSeNa is a useful nucleophile used to introduce the phenylselenyl group by nucleophilic substitution of alkyl halides, alkyl sulfonates ( mesylates or tosylates ) and epoxides.
10. The approximate order of reactivity, beginning with the most reactive, is as follows : acid chlorides aldehydes > tosylates ~ epoxides > chlorides > ketones > esters > nitriles > > alkenes
11. In modern usage the definition of the reaction has been expanded to include the conversion of alcohols to alkyl halides by first converting the alcohol to a sulfonate ester ( tosylates or mesylates are usually used ), and then performing the substitution.
12. An example of this formation route is the reaction that led Winstein and Trifan to propose the delocalized structure of the 2-norbornyl cation . 2-norbornyl tosylates and brosylates form the 2-norbornyl cation through this route as an intermediate towards solvolysis.