3910-58-5Relevant articles and documents
Polyoxometalate-Driven Ease Conversion of Valuable Furfural to trans- N, N-4,5-Diaminocyclopenten-2-ones
Fountoulaki, Stella,Lykakis, Ioannis N.,Tzani, Marina A.
, (2022/02/10)
We investigated the catalytic efficacy of silicotungstic acid (H4SiW12O40) polyoxometalate (POM) toward the reaction between furfural and amines that selectively yields trans-N,N-4,5-substituted-diaminocyclopenten-2-ones (trans-DACPs). H4SiW12O40 facilita
Intramolecular C?H Amination of N-Alkylsulfamides by tert-Butyl Hypoiodite or N-Iodosuccinimide
Kiyokawa, Kensuke,Jou, Keisuke,Minakata, Satoshi
supporting information, p. 13971 - 13976 (2021/08/30)
1,3-Diamines are an important class of compounds that are broadly found in natural products and are also widely used as building blocks in organic synthesis. Although the intramolecular C?H amination of N-alkylsulfamide derivatives is a reliable method for the construction of 1,3-diamine structures, the majority of these methods involve the use of a transition-metal catalyst. We herein report on a new transition-metal-free method using tert-butyl hypoiodite (t-BuOI) or N-iodosuccinimide (NIS), enabling secondary non-benzylic and tertiary C?H amination reactions to proceed. The cyclic sulfamide products can be easily transformed into 1,3-diamines. Mechanistic investigations revealed that amination reactions using t-BuOI or NIS each proceed via different pathways.
Photocatalyzed cascade Meerwein addition/cyclization of: N -benzylacrylamides toward azaspirocycles
Yuan, Li,Jiang, Sheng-Ming,Li, Zeng-Zeng,Zhu, Yong,Yu, Jian,Li, Lan,Li, Ming-Zhu,Tang, Shi,Sheng, Rui-Rong
supporting information, p. 2406 - 2410 (2018/04/12)
A visible-light-induced cascade Meerwein addition/cyclization of alkenes involving C-F bond cleavage was developed. This method offers a rapid access to azaspirocyclic cyclohexadienones from N-benzylacrylamides via C-F bond cleavage applying H2O as an external oxygen source, allowing for the incorporation of various aromatic moieties originating from aryldiazonium salts.