Iron-Catalyzed Hydroboration: Unlocking Reactivity through Ligand Modulation
作者:Maialen Espinal-Viguri、Callum R. Woof、Ruth L. Webster
DOI:10.1002/chem.201602818
日期:2016.8.8
hydroboration (HB) of alkenes and alkynes is reported. A simple change in ligand structure leads to an extensive change in catalyst activity. Reactions proceed efficiently over a wide range of challenging substrates including activated, unactivated and sterically encumbered motifs. Conditions are mild and do not require the use of reducing agents or other additives. Large excesses of borating reagent are not required
Hydrophosphination of Unactivated Alkenes and Alkynes Using Iron(II): Catalysis and Mechanistic Insight
作者:Maialen Espinal-Viguri、Andrew K. King、John P. Lowe、Mary F. Mahon、Ruth L. Webster
DOI:10.1021/acscatal.6b02290
日期:2016.11.4
The catalytic addition of phosphines to alkenes and alkynes is a very attractive process that offers access to phosphines in a 100% atom-economic reaction using readily available and inexpensive materials. The products are potentially useful ligands and organocatalysts. Herein, we report the first example of intramolecular hydrophosphination of a series of nonactivated phosphinoalkenes and phosphinoalkynes