- Tracing and elucidating visible-light mediated oxidation and C-H functionalization of amines using mass spectrometry
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The co-existing mechanism of visible light mediated direct oxidation and C-H functionalization of amines was investigated by capturing all the intermediates using online mass spectrometry. The two-step dehydrogenation of amine involving a proton coupled electron transfer (PCET) process was revealed for the first time.
- Ai, Wanpeng,Gao, Yunpeng,Xue, Jinjuan,Liu, Xiaoyun,Liu, Huwei,Wang, Jianbo,Bai, Yu
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supporting information
p. 2163 - 2166
(2020/02/26)
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- P4VPy–CuO nanoparticles as a novel and reusable catalyst: application at the protection of alcohols, phenols and amines
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P4VPy–CuO nanoparticles were synthesized using ultrasound irradiations. Relevant properties of the synthesized nanoparticles were investigated by X-ray diffraction, scanning electron microscopy, transmission electron microscopy and Fourier transform infrared spectroscopy. After identification, the prepared reagent was used for the promotion of different types of protection reactions of alcohols, phenols and amines. Easy workup, short reaction times, excellent yields, relatively low cost and reusability of the catalyst are the striking features of the reported methods.
- Shirini, Farhad,Fallah-Shojaei, Abdollah,Abedini, Masoumeh,Samavi, Laleh
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p. 1699 - 1712
(2016/07/27)
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- Preparation of N,O-Aminals as Synthetic Equivalents of H2C=NAr and (H2C=NHAr)+ ions: Neutral- and Acid-promoted Transformations
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A general method for the synthesis of N, O-aminals derived from primary aromatic amines is described.The reactivity of these compounds under neutral and acidic conditions has been studied and the title compounds can be envisaged as general purpose H2C=NAr or (H2C=NAr)+ equivalents.N,O-Aminals have been converted into perhydrotriazines by moderate heating and into bis(4-aminoaryl)methane derivatives or N-benzylarylamines, respectively, when heated in acidid media with pH control.Reduction od N,O-acetals with sodium cyanoborohydride has revealed that the C-O bond is broken exclusively in acidic media.
- Barluenga, Jose,Bayon, Ana M.,Campos, Pedro,Asensio, Gregorio,Gonzalez-Nunez, Elena,Molina, Yolanda
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p. 1631 - 1636
(2007/10/02)
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- Monoalkylation of Primary Aromatic Amines via N-(Alkoxymethyl)aryl Amines. Evidence for the Formation of Stable Monomeric Methyleneamines
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Monomeric methyleneamines (1), formed from N-(alkoxymethyl)arylamines (3), are stable at -60 deg C and may be trapped with organometallic reagents to provide the N-alkylarylamines (7).
- Barluenga, Jose,Bayon, Ana M.,Asensio, Gregorio
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p. 1109 - 1110
(2007/10/02)
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