nucleophilic addition उदाहरण वाक्य
उदाहरण वाक्य
- It is used to activate ketones and aldehydes toward nucleophilic addition by formation of enamines:
- It is usually faster than nucleophilic addition and can sometimes exceed the rate of proton transfer.
- Similarly, the F�rst-Plattner rule applies to nucleophilic additions to imines and halonium ions.
- In 1978, Mingos, Stephen G . Davies and nucleophilic additions will occur on pi ligands.
- Selectivity in nucleophilic additions to chiral aldehydes is often explained by the Felkin-Anh model ( see figure ).
- In one application t-Bu-P4 is employed in a nucleophilic addition converting the pivaldehyde to the alcohol:
- On the other hand, some nucleophilic addition reactions involving addition to a carbonyl group in general show the opposite trend.
- A look at the whole reaction path indicates that the rate-determining step in this process is the nucleophilic addition.
- Top to bottom : electrophilic addition to alkene, nucleophilic addition of nucleophile to carbonyl and free radical addition of halide to alkene
- and organostannane additions ( nucleophilic addition of an allyl-, allenyl-, or propargylstannanes to an aldehydes and imines ).