Catalytic Enantioselective Intermolecular Hydroacylation: Rhodium-Catalyzed Combination of β-S-Aldehydes and 1,3-Disubstituted Allenes
摘要:
A rhodium(I) catalyst incorporating the Me-DuPhos ligand promotes enantioselective intermolecular hydroacylation between P-S-aldehydes and 1,3-disubstituted allenes. The nonconjugated enone products are obtained in good yields and with high enantioselectivities.
Gold‐Catalyzed One‐Pot Synthesis of 1,3‐Disubstituted Allenes from Benzaldehydes and Terminal Alkynes
作者:Danilo M. Lustosa、Simon Clemens、Matthias Rudolph、A. Stephen K. Hashmi
DOI:10.1002/adsc.201900824
日期:2019.11.5
A new and facile one‐pot synthesis of 1,3‐disubstituted allenes, using cheap and readily available terminal alkynes, benzaldehyde derivatives and morpholine, was developed. A small library of 20 allenes demonstrates a broad applicability, with yields up to 86%. Isotopic‐labelling and cross‐over experiments strongly indicate that our reaction proceeds via a two‐step A3‐coupling followed by a 1,5‐hydrogen
Catalytic Enantioselective Intermolecular Hydroacylation: Rhodium-Catalyzed Combination of β-<i>S</i>-Aldehydes and 1,3-Disubstituted Allenes
作者:James D. Osborne、Helen E. Randell-Sly、Gordon S. Currie、Andrew R. Cowley、Michael C. Willis
DOI:10.1021/ja8069133
日期:2008.12.24
A rhodium(I) catalyst incorporating the Me-DuPhos ligand promotes enantioselective intermolecular hydroacylation between P-S-aldehydes and 1,3-disubstituted allenes. The nonconjugated enone products are obtained in good yields and with high enantioselectivities.