First heterogeneously palladium catalysed α-arylation of diethyl malonate
✍ Scribed by Laurent Djakovitch; Klaus Köhler
- Book ID
- 108346646
- Publisher
- Elsevier Science
- Year
- 2000
- Tongue
- English
- Weight
- 105 KB
- Volume
- 606
- Category
- Article
- ISSN
- 0022-328X
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📜 SIMILAR VOLUMES
## Abstract A heterogeneous tetrakis(ammine)palladium‐NaY zeolite {[Pd(NH~3~)~4~]/NaY} catalyst was applied successfully to the Heck arylation of acrolein diethyl acetal using a large variety of aryl and heteroaryl bromides. Depending on the reaction conditions (Heck __versus__ Cacchi) good to high
The influence of various heterogeneous bases on yield and selectivity in the a-arylation of diethyl malonate was studied. Barium hydroxide was found to provide excellent results in this context. The bases used can be easily removed from the reaction medium by filtration.