Results 61 to 70 of about 5,721 (226)

Chiral Potassium Brønsted Base‐Catalyzed Stereoselective Synthesis of 1,3‐Diols via a Tandem Allylic Isomerization/Asymmetric Aldol–Tishchenko Reaction

Advanced Synthesis &Catalysis, EarlyView.
Chiral potassium base catalysts featuring 1,1´‐bi‐2‐naphthol‐derived chiral crown ethers as ligands promote a tandem allylic isomerization/asymmetric aldol‐Tishchenko reaction of allylic alcohols and aldehydes. This method provides enantioenriched 1,3‐diols with excellent diastereoselectivity and high enantioselectivity, thereby expanding the synthetic
Hiroki Ishikawa, Masahiro Sai
wiley   +1 more source

Mechanochemical reaction of ninhydrin with aromatics, enols and amines: Synthesis, crystal structure and supramolecular self-assembly of cyclic and acyclic adducts

Results in Chemistry, 2023
Ninhydrin and related indanone scaffolds are employed as effective synthon in organic and bioorganic chemistry. In the present work, the reactivity of ninhydrin is exploited to synthesize various cyclic and acyclic compounds using mortar and pestle ...
Suven Das, Purak Das, Suvendu Maity, Prasanta Ghosh, Arpita Dutta   +4 more
doaj   +1 more source

Attempts Towards Total synthesis of (±) Spirooliganone-A [PDF]

, 2015
The group has recently reported a novel protocol of oxidative dearomatization of napthols using phenyl selenium bromide (PhSeBr). The progress through this process towards the natural product synthesis especially the Spiroliganone system in the different
Bhattacharjya , Punarbasu
core  

Gαi1/3 Is a Novel Regulatory Target for RANKL Signal Transduction and Osteoporosis

Advanced Science, EarlyView.
ABSTRACT Osteoporosis, characterized by progressive bone loss and increased fracture risk, is a growing concern as the population ages. Current treatments, though advanced, remain limited, underscoring the necessity for novel therapeutic targets. Recent studies have shown that the immune system plays a key role in osteoporosis, with osteoclasts driving
Chaowen Bai, Mingchao Zhang, Le Liu, Lide Tao, Chenyang Xu, Hao Chai, Xin Shi, Yin Wang, Xiaopei Zhang, Qiong Chen, Dong Liu, Jinyu Bai, Chang She, Xiaozhong Zhou, Cong Cao, Huajian Shan   +15 more
wiley   +1 more source

Multicomponent, Solvent-Free Synthesis of 1-Amidoalkyl-2-naphthols in the Presence of H3+xPMo12-x Vx O40 Heteropolyacids as Recyclable and Green Catalysts

E-Journal of Chemistry, 2011
A rapid and efficient one-pot method for the synthesis of 1-amidoalkyl-2-naphthols has been developed in the presence of mixed-addenda vanadium(V)-substituted polyoxomolybdates including: H3+xPMo12-xVxO40 (x=1-3) heteropolyacids (HPAs) as recyclable ...
Fatemeh F. Bamoharram, Majid M. Heravi, Mina Roshani, Mohammad J. Sane Charkhi   +3 more
doaj   +1 more source

K₂CO₃-Promoted oxy-Michael Addition/Cyclization of α,β-Unsaturated Carbonyl Compounds with Naphthols: Synthesis of Naphthopyrans

Molecules, 2023
A potassium carbonate promoted tandem oxy-Michael addition/cyclization of α,β-unsaturated carbonyl compounds with naphthol derivatives for the synthesis of 2-substituted naphthopyrans was developed.
Shan-Shan Li, Li-Li Zhao, Min Pan, Na Feng, Jin-Bao Peng, Ai-Jun Ma   +5 more
doaj   +1 more source

An All‐in‐One Lignin‐Based Artificial Thylakoid Nanovesicle Via In‐Situ Confined Growth Strategy for High‐Efficient and Selectivity CO2 Photoreduction

Carbon Energy, EarlyView.
The low light/CO2 capture and slow dynamic transfer of photogenerated electrons hamper photocatalysts’ high activity and selectivity. Inspired by the chloroplast's photosynthesis mechanism, an all‐in‐one lignin‐based artificial thylakoid nanovesicle (AiO‐L‐ATN) is constructed using a confined growth strategy of lignin molecules. The performance of such
Hang Wang, Ganmao Su, Xianxian Lin, Yan Qing, Yiqiang Wu, Fuxiang Chu, Fuquan Xiong   +6 more
wiley   +1 more source

Efficient Synthesis of 1-Amidoalkyl-2-Naphthols by One-Pot, Three-Component Reaction under Solvent-Free Conditions

Journal of Chemistry, 2013
Two efficient and direct procedures have been developed for the preparation of 1-amidoalkyl-2-naphthols by a one-pot condensation of aldehydes, 2-naphthol, and amides in the presence of trichloroacetic acid or cobalt (II) chloride as catalyst.
Zahed Karimi-Jaberi, Marziyeh Jokar, S. Zoleykha Abbasi   +2 more
doaj   +1 more source

Recent Advances in Asymmetric Organocatalyzed Conjugate Additions to Nitroalkenes [PDF]

, 2017
The asymmetric conjugate addition of carbon and heteroatom nucleophiles to nitroalkenes is a very interesting tool for the construction of highly functionalized synthetic building blocks.
Alonso, Diego A., Baeza, Alejandro, Chinchilla, Rafael, Guillena, Gabriela, Gómez Lucas, Cecilia, Pastor, Isidro M., Ramón, Diego J.   +6 more
core   +3 more sources

Shedding Light on Synthetic Autocatalysis: From Conventional Closed‐Shell Chemistries to Overlooked Open‐Shell Occurrences

Chemistry – A European Journal, EarlyView.
Why add another catalyst when the product itself holds the power to catalyze its own formation? Autocatalysis in synthetic chemistry enhances reaction efficiency and uncovers novel catalytic behavior across both closed‐shell and open‐shell systems, expanding reactivity and enabling innovative design strategies.
Jaspreet Kaur, Joshua P. Barham
wiley   +1 more source