Results 81 to 90 of about 200 (108)

Condition based divergence in synthesis of tetrahydrobenzo[b]pyrans

Research on Chemical Intermediates, 2016
An environmentally benign novel strategy is developed for the synthesis of tetrahydrobenzo[b]pyrans by using thiamine mononitrate as a green catalyst, with the help of a conventional as well as non-conventional energy source. Synthesis of tetrahydrobenzo[b]pyrans is achieved by one pot condensation of aromatic aldehydes, malononitrile and dimedone in a
Amol U. Khandebharad, Swapnil R. Sarda, Charansingh H. Gill, Mahesh G. Soni, Brijmohan R. Agrawal   +4 more
openaire   +1 more source

Molecular Iodine: An Efficient Catalyst for the Synthesis of Tetrahydrobenzo[b]pyrans

Synthetic Communications, 2007
Abstract An iodine/DMSO system is introduced as an excellent catalyst in three‐component coupling reactions of tetrahydrobenzo[b]pyran synthesis. The reaction proceeds quickly under very mild reaction conditions.
Rajesh S. Bhosale, Chandrakant V. Magar, Kuldeep S. Solanke, Sandeep B. Mane, Sunil S. Choudhary, Rajendra P. Pawar   +5 more
openaire   +1 more source

Synthesis, molecular modeling and BACE-1 inhibitory study of tetrahydrobenzo[b] pyran derivatives

Bioorganic Chemistry, 2019
β-Secretase (BACE1) has been broadly documented as one of the possible therapeutic targets for the treatment of Alzheimer's disease. In this paper, we report the synthesis and the for β-secretase (BACE-1) inhibitory activity of new series of tetrahydrobenzo [b] pyran derivatives.
Vijaya, Bhaskar, Reshma, Chowdary, Sheshagiri R, Dixit, Shrinivas D, Joshi   +3 more
openaire   +2 more sources

Caffeine Catalyzed Synthesis of Tetrahydrobenzo[b]pyran Derivatives: Synthesis and Insight into Kinetics and Mechanism

Combinatorial Chemistry & High Throughput Screening, 2016
Tetrahydrobenzo[b]pyran derivatives are considered as a special class in drug research because of their various biological and pharmacological benefiting usages. In the current work, we developed new synthetic methods for the preperation of tetrahydrobenzo[b]pyran derivatives using arylaldehydes 1, malononitrile 2 and dimedonein 3 in the presence of ...
Sayyed Mostafa, Habibi-Khorassani, Mehdi, Shahraki, Ebrahim, Mollashahi, Sayyedeh Shadfar, Pourpanah, Shabnam Keshavarz, Majdabadi   +4 more
openaire   +2 more sources

Introduction of Succinimide as A Green and Sustainable Organo-Catalyst for the Synthesis of Arylidene Malononitrile and Tetrahydrobenzo[b] pyran Derivatives

Combinatorial Chemistry & High Throughput Screening, 2021
Aim and Objective:In this work, we tried to introduce a non-toxic and stable organic compound named succinimide as a green and efficient organo-catalyst for the promotion of the synthesis of arylidene malononitrile and tetrahydrobenzo[b]pyran derivatives. Using this method led to a clean procedure to achieve these types of bioactive compounds without a
Fariba, Hassanzadeh, Farhad, Shirini, Manouchehr, Mamaghani, Nader, Daneshvar   +3 more
openaire   +2 more sources

ChemInform Abstract: Molecular Iodine: An Efficient Catalyst for the Synthesis of Tetrahydrobenzo[b]pyrans.

ChemInform, 2008
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Rajesh S. Bhosale, Chandrakant V. Magar, Kuldeep S. Solanke, Sandeep B. Mane, Sunil S. Choudhary, Rajendra P. Pawar   +5 more
openaire   +1 more source

Nanosized TiO2 as a Recyclable Heterogeneous Catalyst for the Synthesis of Tetrahydrobenzo[b]pyran Derivatives

Journal of Cluster Science, 2013
An electrochemical reduction method was used for the preparation of TiO2 nanoparticles in which agglomeration with formation of undesired metal powders is prevented by the presence of ammonium stabilizers. These synthesized nanoparticles were characterized by UV–Visible, XRD, SEM–EDS and TEM analysis techniques.
Priyanka L. Anandgaonker, Sunita Jadhav, Suresh T. Gaikwad, Anjali S. Rajbhoj   +3 more
openaire   +1 more source

A facile and efficient synthesis of tetrahydrobenzo[b]pyrans using lactose as a green catalyst

Research on Chemical Intermediates, 2014
Lactose has been used as a mild, efficient, green, and inexpensive catalyst for the synthesis of tetrahydrobenzo[b]pyran derivatives via a one-pot, three-component condensation between aryl aldehydes, malononitrile, and dimedone in H2O:EtOH at 60 °C.
Fatemeh Noori Sadeh, Malek Taher Maghsoodlou, Nourallah Hazeri, Mehrnoosh Kangani   +3 more
openaire   +1 more source

Preparation and characterization of magnetite-dihydrogen phosphate as a novel catalyst in the synthesis of tetrahydrobenzo[b]pyrans

Materials Chemistry and Physics, 2017
Abstract A novel inexpensive, efficient, environmentally-benign, and magnetically recoverable nanomaterial consisting of dihydrogen phosphate ions supported on silica-coated magnetite nanoparticle was prepared. The synthesized nanomaterial was characterized with FT-IR, XRD, FE-SEM, TEM, ICP and VSM.
Hamid Reza Saadati-Moshtaghin, Farrokhzad Mohammadi Zonoz   +1 more
openaire   +1 more source

Application of mesoporous silicate-magnetic compounds in the synthesis of tetrahydrobenzo[b]pyran

Chemistry and Nanochemistry,4(4 ...
Karami, Masoomeh, Sanaeishoar, Haleh
openaire   +1 more source