TCI Chemistry News
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March 2024
TCI offers an extensive catalog of over 30,000 high quality organic reagents suitable for benchtop-to-bulk chemistry. This issue covers our chemistry topics as follows:
- Air-Stable and Easy-to-Handle Nickel(0) Catalyst: Ni(COD)(DQ)
- Piers Borane with High Lewis Acidity and Catalytic Hydroboration Activity
- Stilbene Ligand for Stereospecific Cross-Coupling Reactions
- Spirobipyridine Ligand for meta-Selective C-H Borylation
Air-Stable and Easy-to-Handle Nickel(0) Catalyst: Ni(COD)(DQ)
Ni(COD)(DQ) [N1198] (= (1,5-cyclooctadiene)(duroquinone)nickel(0)) is an air stable nickel(0) complex. Its use as a substitute for Ni(COD)2 complex, which is sensitive to air and heat, and its application to the synthesis of all-carbon tetrasubstituted alkenes have been reported.
Piers Borane with High Lewis Acidity and Catalytic Hydroboration Activity
Piers borane [B6561] is a highly active catalyst for the hydroboration of alkenes and alkynes. B(C6F5)2 structure is a highly Lewis acidic unit and has been used in the synthesis of frustrated Lewis pairs with catalytic hydrogenation ability.
Stilbene Ligand for Stereospecific Cross-Coupling Reactions
Stereospecific cross-coupling reactions between tertiary alkyl pivalates and aryl boronic acids by using the stilbene ligand [E1539] and nickel catalysts has been reported. The quaternary asymmetric carbon construction method in stereo retention is useful for the synthetic research of pharmaceutical intermediates.
Spirobipyridine Ligand for meta-Selective C-H Borylation
The spirobipyridine ligand [B6552] allows the the highly selective introduction of a boryl group at the meta-position of benzene ring. The selectivity is also applicable to common C-H borylation conditions. The steric structure of the Bpin moiety allows hydrogen atom in the meta-position of arene moiety preferentially approaches the metal center, resulting in the regioselectivity.Upcoming Events
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