Cationic Micelle-catalyzed Ring-Opening Reactions of Aziridines with Thiols in Water
作者:Min Yang、Qin Yang、Puqing Chen、Yiyuan Peng
DOI:10.1002/cjoc.201190112
日期:2011.3
An efficient and practical method is described for the ring‐opening reactions of N‐tosylaziridines with various thiols in water under mild conditions. Various surfactants have been evaluated to optimize the reactions. Under optimal conditions, these reactions gave rise to the corresponding β‐amino sulfides in good to excellent yields.
Pyridine-N-oxide: An Efficient Organocatalyst for Ring-Opening Reactions of Aziridines with Aryl Thiols
作者:Qin Yang、Zhenlan Yin、Min Yang、Yiyuan Peng
DOI:10.1002/cjoc.201190064
日期:2011.1
Pyridine‐N‐oxide serves as an efficient catalyst for the ring‐opening reactions of N‐tosylaziridines with various aryl thiols under mild conditions. This transformation is highly effective, which gives rise to the corresponding β‐amino sulfides in good to excellent yields.
Stereoselective Lewis Acid Mediated (3+2) Cycloadditions of<i>N</i>-H- and<i>N</i>-Sulfonylaziridines with Heterocumulenes
作者:Robert A. Craig、Nicholas R. O'Connor、Alexander F. G. Goldberg、Brian M. Stoltz
DOI:10.1002/chem.201303699
日期:2014.4.14
Alkyl and arylisothiocyanates and carbodiimides are effective substrates in (3+2) cycloadditions with N‐sulfonyl‐2‐substituted aziridines and 2‐phenylaziridine for the synthesis of iminothiazolidines and iminoimidazolidines. Additionally, the stereoselective (3+2) cycloaddition of N‐H‐ and N‐sulfonylaziridines with isothiocyanates can be accomplished, allowing for the synthesis of highly enantioenriched
Visible light triggered regioselective ring expansion of N-tosylaziridines: An efficient approach to 2-nitroazetidines
作者:Ritu Kapoor、Shubhangi Tripathi、Sachchida N. Singh、Twinkle Keshari、Lal Dhar S. Yadav
DOI:10.1016/j.tetlet.2017.08.042
日期:2017.10
Visible light induced ringexpansion of N-tosylaziridines with 1-bromo-1-nitroalkanes to afford 2-nitroazetdines in moderate to excellent yields with high regio- and diastereoselectivity is reported. The salient features of the protocol include the first synthesis of 2-nitroazetidines, operational simplicity, utilization of clean, inexpensive and sustainable resources like visible light and atmospheric