Efficient and practical synthesis of modular chiral β-organochalcogeno amines, ArYCH 2 CH(R)NH 2 , and single crystal structures of (S)-MsOCH2CH(

Super-Anticorrosive Materials Based on Bifunctionalized Reduced Graphene Oxide

“…This strategy produces a second passive layer of protection when the silane groups are polymerized. , As was disclosed before, the advantage to preserve the amine groups (−NH 2 ) on the GO surface leads to get an efficient cross-linker agent, which reacts with epoxy terminal groups from resin, thus closing the gap between the BFRGO layers and the polymeric matrix. Also, the second functional groups (ammonium ions, −NH 3 + ) are effective trapping agents of negatively charged atoms or molecules (e.g., Cl – ). − This novel combination enables us to obtain nanocomposite coatings with passive–active protection against corrosion. Under these reaction conditions, around 83% of functional groups are −NH 2 and the rest are −NH 3 + (Table S1, Supporting Information), as it will be demonstrated further by XPS.…”

“…The amine groups (−NH 2 ) act as cross-linker agents, which react with epoxy terminal groups from resin, thus closing the gap between the BFRGO layers and the polymeric matrix. Meanwhile, the ammonium ions (−NH 3 + ) are effective trapping agents of negatively charged atoms or molecules (e.g., Cl – ). − This novel combination enables us to obtain nanocomposite coatings with passive–active protection against corrosion. First, GO was functionalized with N -[3-triethoxysilyl-propyl]­propan-2-imina (ITES) under a fast and facile microwave-assisted method to obtain GO-ITES.…”

Synthesis and absolute structure of (R)-2-(benzylselanyl)-1-phenylethanaminium hydrogen sulfate monohydrate: crystal structure and Hirshfeld surface analyses

“…1 H and 13 C{ 1 H} NMR spectra were recorded on an AVANCE-II Bruker 400 MHz spectrometer. (R)-1-(Benzylselanyl)-2-phenylethan-2-amine was synthesized according to our reported literature procedure (Revanna et al, 2015).…”

“…The chiral selenated amine (R)-2-(benzylselanyl)-1phenylethanamine was synthesized by a sequence of reactions shown in the reaction scheme starting from (2R)-2-amino-2phenylethan-1-ol [derived from amino acid (R)-phenylglycinal] as per the literature procedure (Revanna et al, 2015). The title salt of the above amine was obtained by treating it with sulfuric acid (5 M) in methanol under ice-cold conditions.…”

“…These structural aspects are worth exploring as weak SBIs (Iwaoka et al, 2001(Iwaoka et al, , 2002a in the compounds of heavy chalcogens (Se and Te) are ascribed important roles in structural chemistry, such as the stabilization of otherwise unstable organo-chalcogen compounds and supramolecular associations (Tiekink & Zukerman-Schpector, 2010;Werz et al, 2002) and possessing biological activities (Reich et al, 2016;Bartolini et al, 2017;Engman et al,1992;Mukherjee et al, 2010). Some organoselenated alkyl/arylamines have been synthesized (Singh & Srivastava, 1990;Srivastava et al, 1994;Revanna et al, 2015), but further investigations on their single-crystal X-ray structures, especially of chiral derivatives, are limited (Musher et al,1969;Raghavendra Kumar et al, 2006;Chivers & Laitinen, 2015;Bleiholder et al, 2006, Prabhu Kumar et al, 2019. Therefore, the synthesis and discussions on the single-crystal structural features of (R)-2-(benzylselanyl)-1-phenylethanaminium hydrogen sulfate monohydrate, [BnSeCH 2 CH(Ph)NH 3 + ](HSO 4 À ), are the subject of the present paper.…”