Mild Darzens Annulations for the Assembly of Trifluoromethylthiolated (SCF<sub>3</sub>) Aziridine and Cyclopropane Structures
作者:Michael D. Delost、Jon T. Njardarson
DOI:10.1021/acs.orglett.1c02204
日期:2021.8.6
We report mild new annulation approaches to trisubstituted trifluoromethylthiolated (SCF3) aziridines and cyclopropanes via Darzens inspired protocols. The products of these anionic annulations, rarely studied previously, possess attractive features rendering them valuable building blocks for synthesis platforms. In this study, trisubstituted acetophenone nucleophiles bearing SCF3 and bromine substituents
作者:Ling Huang、Dongdong Cao、Jie Pan、Lingjia Fang、Qianqian Wang、Dingben Chen、Jianguo Yang
DOI:10.1002/adsc.202000974
日期:2020.12.22
Herein, metal‐free oxidative tandem cross‐dehydrogenativecoupling of 1,3‐dicarbonyl compounds with N,N‐dimethylanilines is developed. The reaction affords two new C(sp3)−C(sp3) bonds in one pot. A broad range of ß‐dicarbonyl compounds and N,N‐dimethylanilines were compatible, and the desired products were synthesized in moderate‐to‐good yields.
Iron-Catalyzed α-Methylenation of Ketones with<i>N</i>,<i>N</i>-Dimethylacetamide: An Approach for α,β-Unsaturated Carbonyl Compounds
作者:Yi-Ming Li、Shao-Jie Lou、Qin-Hua Zhou、Lian-Wen Zhu、Long-Feng Zhu、Lei Li
DOI:10.1002/ejoc.201500189
日期:2015.5
this study, we developed a general iron-catalyzedα-methylenation of ketones by using N,N-dimethylacetamide as the one-carbon source. Various ketones, including aryl and alkyl ketones, enones, and dicarbonyl compounds were well tolerated to yield the corresponding α,β-unsaturatedcarbonylcompounds in the presence of an iron catalyst, peroxides, and N,N-dimethylacetamide under aerobic conditions.
2-Methylene-1,3-dicarbonylcompounds reacted with alky vinylethers in benzene to give hetero-Diels–Alderreaction products, 3,4-dihydro-2H-pyrans, regioselectively and/or chemoselectively.