期刊
RSC ADVANCES
卷 3, 期 14, 页码 4552-4557出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3ra40429c
关键词
-
资金
- European Union through the EFRE INTERREG IV ETC-AT-CZ programme [M00146]
The applicability of easily available ammonium salts to access aziridines via an ammonium ylide pathway was carefully investigated and compared with classical aza-Darzens approaches using alpha-bromo carbonyl nucleophiles. Whereas amide-stabilised ammonium ylides could be successfully reacted with aromatic aldimines to obtain the corresponding trans-aziridines in good yields and with high diastereoselectivities, alpha-bromo amides failed. In sharp contrast, acetophenone-based ylides did not give any aziridines while in this specific case alpha-bromo acetophenone derivatives gave the corresponding cis-aziridines in high yields and with excellent diastereoselectivities under optimised conditions.
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