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
[EN] PREPARATION METHOD FOR 1,3-DISUBSTITUTED ALLENE COMPOUND AT ROOM TEMPERATURE BASED ON METAL CARBENE CATALYTIC SYSTEM<br/>[FR] PROCÉDÉ DE PRÉPARATION D'UN COMPOSÉ ALLÈNE 1,3-DISUBSTITUÉ À TEMPÉRATURE AMBIANTE BASÉ SUR UN SYSTÈME CATALYTIQUE DE CARBÈNE MÉTALLIQUE<br/>[ZH] 一种基于金卡宾催化体系室温条件下1,3-二取代联烯类化合物的制备方法
申请人:[en]SHANGHAI INSTITUTE OF ORGANIC CHEMISTRY, CHINESE ACADEMY OF SCIENCES;[zh]中国科学院上海有机化学研究所
Room Temperature Allenation of Terminal Alkynes with Aldehydes
作者:Junzhe Xiao、Yifan Cui、Can Li、Haibo Xu、Yizhan Zhai、Xue Zhang、Shengming Ma
DOI:10.1002/anie.202109879
日期:2021.12
Au(SIPr)NTf2 has been identified for the roomtemperature ATA reaction to afford diverse 1,3-disubstituted allenes with 1-methyl-1,2,3,4-tetrahydroisoquinoline as amine and aldehyde and TFE or HFIP as the mediator. A formal synthesis of (−)-centrolobine and synthetic transformations have been demonstrated.
Au(SIPr)NTf 2已被确定用于室温 ATA 反应,以提供不同的 1,3-二取代丙二烯,1-甲基-1,2,3,4-四氢异喹啉作为胺和醛,TFE 或 HFIP 作为介体。已经证明了 (-)-centrolobine 和合成转化的正式合成。
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.