Article
Chemistry, Physical
Yingqi Xia, Yingtang Ning, Minjie Liu, Fen -Er Chen
Summary: A poly(ethylene glycol) supported amino alcohol has been developed as a chiral ligand for the copper-catalyzed asymmetric nitrolaldol reaction. The catalyst enables the synthesis of syn-2-nitro-1,3-diols with high yields and stereoselectivities. The PEG moiety allows for easy purification and recycling of the catalyst.
JOURNAL OF CATALYSIS
(2023)
Article
Chemistry, Multidisciplinary
Hiroaki Iwamoto, Yu Ozawa, Yuta Hayashi, Tsuneo Imamoto, Hajime Ito
Summary: A new series of C-1-symmetric P-chirogenic bisphosphine ligands have been developed, which showed high performance in a copper(I)-catalyzed asymmetric borylation reaction. Computational studies highlighted the importance of the highly rigid phosphine conformation in achieving high stereo- and product-selectivities.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Yuki Saito, Shu Kobayashi
Summary: The application of heterogeneous catalysts in continuous-flow enantioselective hydroacylation reactions was studied. Catalysts were prepared by mixing supports and rhodium complexes, and showed excellent activity and enantioselectivity. Under optimized conditions, the catalysts exhibited high turnover numbers and could be applied to various substrates. Furthermore, sequential-flow reactions with other heterogeneous catalysts were demonstrated for the synthesis of biologically active molecules and functional materials.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Jian Zhang, Mingyang Song, Weijun Tang, Dong Xue, Jianliang Xiao, Huaming Sun, Chao Wang
Summary: Converting racemic compounds to enantioenriched products is a common method in accessing chiral molecules. In this study, a kinetic resolution method is used to transform racemic allylic alcohols into chiral compounds, with good yields and stereoselectivities.
Article
Chemistry, Multidisciplinary
Saadi Samadi, Akram Ashouri, Hersh Rashid, Shiva Majidian, Mahsa Mahramasrar
Summary: In this study, SBA-15 nanoporous silica was synthesized using a hydrothermal method and functionalized to prepare chiral heterogeneous ligands for asymmetric allylic oxidation reactions. By optimizing the reaction conditions, high yields and enantiomeric excess were achieved at specific temperature and catalyst concentrations. The recyclability of the chiral heterogeneous catalysts was also evaluated, showing no significant reduction in reaction results after three runs.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Fei Li, Jing-Lan Kan, Bing-Jian Yao, Yu-Bin Dong
Summary: A general and efficient organocatalytic asymmetric polymerization approach has been developed for the synthesis of chiral covalent organic frameworks (CCOFs). Using a chiral 2-methylpyrrolidine catalyst, a series of chiral beta-ketoenamine-CCOFs were directly constructed from prochiral aldehyde- and primary amine-monomers. The obtained CCOFs can be further metalated and used as highly efficient catalysts.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Xinpeng Cheng, Tianyou Li, Kaylaa Gutman, Liming Zhang
Summary: This study successfully synthesized alpha,beta-Butenolides with high enantiomeric excess using a novel Cu(I)-ligand cooperative catalysis, highlighting the importance of cooperation between the metal center and the ligand basic amino group. Moreover, it was found that other coinage metals such as Ag and Au can also play a similar role in this asymmetric isomerization chemistry.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Multidisciplinary
Zahra Sharifzadeh, Sayed Ali Akbar Razavi, Ali Morsali
Summary: This study successfully synthesized the first chiral Zr-fumarate framework CMOF(ASP) using a green method, which exhibited excellent catalytic activity and could efficiently catalyze organic synthesis reactions in a short period of time.
Article
Chemistry, Multidisciplinary
Zahra Sharifzadeh, Sayed Ali Akbar Razavi, Ali Morsali
Summary: This study successfully synthesized the first chiral Zr-fumarate framework CMOF(ASP) using a green method, which could efficiently catalyze organic reactions and produce valuable products within a short period of time.
Article
Chemistry, Multidisciplinary
Jialin Qi, Fang Wei, Shuai Huang, Chen-Ho Tung, Zhenghu Xu
Summary: A new method has been developed for the synthesis of sulfur-containing chiral beta-lactams with two consecutive stereogenic centers using copper(I)-catalyzed asymmetric, three-component interrupted Kinugasa reaction. The key lies in the interception of in situ formed chiral four membered copper(I) enolate intermediate with sulfur electrophiles, resulting in good yields and excellent diastereo- and enantioselectivity.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Xiaohui Zhang, Wei Ma, Jinyu Zhang, Weijun Tang, Dong Xue, Jianliang Xiao, Huaming Sun, Chao Wang
Summary: The asymmetric hydroalkylation of racemic allylic alcohols has been developed for the synthesis of chiral amino acid derivatives with two remote chiral centers by borrowing hydrogen catalysis. The stereoselectivities are controlled by a single chiral Ru catalyst via a dynamic kinetic asymmetric transformation process and an interesting diastereoselectivity amplification process of the product.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Yue Jia, Zhihan Zhang, Guo-Ming Yu, Xuan Jiang, Liang-Qiu Lu, Wen-Jing Xiao
Summary: A visible light induced enantioselective deaminative arylation of amino acid derivatives by bifunctional copper catalysis is disclosed. A variety of alpha-aryl-N-phenylamides are prepared with good efficiency and high enantioselectivity. Experimental investigations and theoretical calculations reveal the crucial role of additional phenols in improving catalytic efficiency and enantiocontrol.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Nanoscience & Nanotechnology
Miguel Sanchez-Fuente, Alberto Lopez-Magano, Alicia Moya, Ruben Mas-Balleste
Summary: Condensation of BINAPO-(PhCHO)(2) and 1,3,5-tris(4-aminophenyl)benzene(TAPB) leads to a new imine-based chiral organic material (COM) that can be post-functionalized through reductive transformation of imine linkers to amines. Although the imine-based material is not stable enough to be used as a heterogeneous catalyst, the reduced amine-linked framework can be efficiently utilized in asymmetric allylation of various aromatic aldehydes. The obtained yields and enantiomeric excesses are comparable to those observed for the molecular BINAP oxide catalyst, with the added advantage of recyclability offered by the amine-based material.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Yuki Saito, Shu Kobayashi
Summary: The article discusses the application of chiral heterogeneous Sc catalysts in continuous-flow reactions, achieving efficient synthesis of compounds through noncovalent interactions and the crucial role of heteropoly acid.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Mariam Abd El Sater, Mohamed Mellah, Diana Dragoe, Emilie Kolodziej, Nada Jaber, Emmanuelle Schulz
Summary: This study reports the first immobilization of a pyrene-tagged chromium salen complex on reduced graphene oxide (rGO) through pi-pi noncovalent interactions, creating a robust catalytic system for asymmetric catalysis. The chiral chromium salen@rGO catalyst was found to maintain high activity and enantioselectivity in repeated cycles, demonstrating compatibility with multi-substrate use.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Chemistry, Physical
Vishal J. Mayani, Suranjana V. Mayani, Sang Wook Kim
APPLIED SURFACE SCIENCE
(2015)
Article
Engineering, Chemical
Vishal J. Mayani, Suranjana V. Mayani, Sang Wook Kim
CHEMICAL ENGINEERING COMMUNICATIONS
(2016)
Article
Chemistry, Multidisciplinary
Govind Sethia, Rajesh S. Somani, Hari Chand Bajaj
Article
Chemistry, Inorganic & Nuclear
S. Senthilkumar, Minaxi S. Maru, R. S. Somani, H. C. Bajaj, Subhadip Neogi
DALTON TRANSACTIONS
(2018)
Article
Chemistry, Physical
Arpan K. Shah, K. Jeya Prathap, Manish Kumar, Sayed H. R. Abdi, Rukhsana I. Kureshy, Noor-ul H. Khan, Hari C. Bajaj
APPLIED CATALYSIS A-GENERAL
(2014)
Article
Chemistry, Multidisciplinary
Suranjana V. Mayani, Vishal J. Mayani, Sang Wook Kim
BULLETIN OF THE KOREAN CHEMICAL SOCIETY
(2014)
Article
Materials Science, Composites
Bhavesh D. Kevadiya, Shiva Shankaran Chettiar, Shalini Rajkumar, Hari C. Bajaj, Harshad Brahmbhatt, Jayesh C. Chaudhari, Rahul P. Thumbar, Devendrasinh Jhala, Mandava V. Rao
COMPOSITES SCIENCE AND TECHNOLOGY
(2014)
Article
Chemistry, Physical
Prathibha Kumari, Prasanta Kumar Bera, Noor-ul H. Khan, Rukhsana I. Kureshy, Sayed H. R. Abdi, Hari C. Bajaj
CATALYSIS SCIENCE & TECHNOLOGY
(2014)
Article
Chemistry, Physical
Nabin Ch Maity, Prasanta Kumar Bera, Debashis Ghosh, Sayed H. R. Abdi, Rukhsana I. Kureshy, Noor-ul H. Khan, Hari C. Bajaj, E. Suresh
CATALYSIS SCIENCE & TECHNOLOGY
(2014)
Article
Chemistry, Physical
Anjan Das, Rukhsana I. Kureshy, P. S. Subramanian, Noor-ul H. Khan, Sayed H. R. Abdi, Hari C. Bajaj
CATALYSIS SCIENCE & TECHNOLOGY
(2014)
Article
Chemistry, Physical
Manoj K. Choudhary, Anjan Das, Rukhsana I. Kureshy, Manish Kumar, Noor-ul H. Khan, Sayed H. R. Abdi, Hari C. Bajaj
CATALYSIS SCIENCE & TECHNOLOGY
(2014)
Article
Multidisciplinary Sciences
Vishal J. Mayani, Suranjana V. Mayani, Sang Wook Kim
SCIENTIFIC REPORTS
(2017)
Article
Chemistry, Inorganic & Nuclear
Jacky H. Advani, Krishnan Ravi, Dhanaji R. Naikwadi, Hari C. Bajaj, Manoj B. Gawande, Ankush Biradar
DALTON TRANSACTIONS
(2020)
Article
Chemistry, Medicinal
S. Kumaresan, Radheshyam Rama Pawar, Bhavesh D. Kevadiya, Hari C. Bajaj
Article
Chemistry, Multidisciplinary
Kalithasan Natarajan, Hari C. Bajaj, Rajesh J. Tayade
MATERIALS CHEMISTRY FRONTIERS
(2018)