A nanoscale iron catalyst for heterogeneous direct <i>N</i>- and <i>C</i>-alkylations of anilines and ketones using alcohols under hydrogen autotransfer conditions
作者:Madhu Nallagangula、Chandragiri Sujatha、Venugopal T. Bhat、Kayambu Namitharan
DOI:10.1039/c9cc04120f
日期:——
report a commercially available nanoscale Fe catalyst for heterogeneous direct N- and C-alkylation reactions of anilines and methyl ketones with alcohols. A hydrogen autotransfer mechanism has been found to operate in these reactions by deuterium labelling studies. In addition, dehydrogenative quinoline synthesis has been demonstrated from amino benzyl alcohols and acetophenones.
Nickel−Copper bimetallic mesoporous nanoparticles: As an efficient heterogeneous catalyst for
<i>N</i>
‐alkylation of amines with alcohols
作者:Zahra Nasresfahani、Mohamad Z. Kassaee
DOI:10.1002/aoc.6032
日期:2021.1
bimetallic catalyst (Ni/Cu‐MCM‐41) is prepared via co‐condensation method. The latter is characterized by Fourier transform infrared (FT‐IR), X‐ray powder diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X‐ray spectroscopy (EDX), diffuse reflectance spectroscopy (DRS), and nitrogen adsorption–desorption analysis. Catalytic performance of Ni/Cu‐MCM‐41 is probed in N‐alkylation of amines
Metal‐Free Ring Opening Cyclization of Cyclopropane Carbaldehydes and
<i>N</i>
‐Benzyl Anilines: An Eco‐Friendly Access to Functionalized Benzo[
<i>b</i>
]azepine Derivatives
作者:Raghunath Dey、Prabal Banerjee
DOI:10.1002/adsc.201801714
日期:2019.6.18
Herein, we report a p‐toluenesulfonic acid (PTSA) initiated mild and user‐friendly ring opening/domino ring opening cyclization reaction (depends on substituent present in N‐benzyl aniline) of cyclopropane carbaldehyde and N‐benzyl aniline towards the formation of substituted 4‐amino butanal/2,3‐dihydro‐1H‐benzo[b]azepine. The product dihydro‐1H‐benzo[b]azepine was also converted into the corresponding
在此,我们报道了对丙烷磺酸和环丙烷苯甲醛与N-苄基苯胺的对甲苯磺酸(PTSA)引发的温和且用户友好的开环/多米诺环开环反应(取决于N-苄基苯胺中存在的取代基) 4-氨基丁醛/ 2,3-二氢-1 H-苯并[ b ]氮杂。产物二氢-1 H-苯并[ b ]氮杂也被转化为相应的四氢-1 H-苯并[ b ]氮杂。
Discovery of Conformationally Restricted Human Glutaminyl Cyclase Inhibitors as Potent Anti-Alzheimer’s Agents by Structure-Based Design
作者:Van-Hai Hoang、Van T. H. Ngo、Minghua Cui、Nguyen Van Manh、Phuong-Thao Tran、Jihyae Ann、Hee-Jin Ha、Hee Kim、Kwanghyun Choi、Young-Ho Kim、Hyerim Chang、Stephani Joy Y. Macalino、Jiyoun Lee、Sun Choi、Jeewoo Lee
DOI:10.1021/acs.jmedchem.9b00751
日期:2019.9.12
analyses indicated that conformationally restrained inhibitors demonstrated much improved QC inhibition in vitro compared to nonrestricted analogues, and several selected compounds demonstrated desirable therapeutic activity in an AD mouse model. The conformational analysis of a representative inhibitor indicated that the inhibitor appeared to maintain the Z-E conformation at the active site, as it
Traceless Directing Strategy: Efficient Synthesis of N-Alkyl Indoles via Redox-Neutral C–H Activation
作者:Chengming Wang、Yong Huang
DOI:10.1021/ol402523x
日期:2013.10.18
general protocol for the synthesis of N-alkyl indoles has been developed via a redoxneutral C–H activation strategy using a traceless nitroso directinggroup. A broad scope of substituted N-alkyl indoles has been prepared in good to excellent yields using a very simple Rh catalyst system in the absence of an external oxidant or any other additive. Good to excellent regioselectivity has been achieved for