Results 181 to 190 of about 90,377 (200)

ChemInform Abstract: Michael Reaction of Methylenemalonaldehydes: Synthetic Approach to 4H‐Pyran‐5‐carboxaldehydes (IV) and 2‐Amino‐4H‐pyran‐5‐carboxaldehydes

ChemInform, 1988
D. DVORAK, D. SAMAN, J. HODACOVA, V. KRAL, Z. ARNOLD   +4 more
openaire   +1 more source

Synthesis and sequential photochromism of thiophene-linked bis-pyrans

Tetrahedron, 2015
Weili Zhao, Qian Dong, Xiaochun Dong
exaly  

Synthesis of mono- and bis-spiro-2-amino-4H-pyrans catalyzed by S-alkyl O-hydrogen sulfothioate functionalized silica-coated magnetic nanoparticles under ultrasound irradiation

Research on chemical intermediates (Print), 2015
A. Karimi, Reyhaneh Davood Abadi, Zeinab Dalirnasab   +2 more
semanticscholar   +1 more source

Regio‐ and Stereoselective Synthesis of Functionalized Dihydropyridines, Pyridines, and 2H‐Pyrans: Heck Coupling of Monocyclopropanated Heterocycles

Angewandte Chemie - International Edition, 2019
Oliver Reiser
exaly  

Chitosan-CTAB: An Efficient Aqueous Micellar System for the Sequential One-Pot Synthesis of Highly Functionalized 2-Amino-4H-Pyrans

, 2016
Rahila, P. Rai, Afshan Ibad, Hozeyfa Sagir, I. Siddiqui   +4 more
semanticscholar   +1 more source

A highly efficacious method for the synthesis of spiro-4H-pyran and 4H-pyran derivatives using BQC as the catalyst and investigating on their in vitro antibacterial activity

Research on Chemical Intermediates
Mahdiye Ghasemi, Narges Seyedi, Farhad Shirini, Bahman Sharifzaheh   +3 more
openaire   +1 more source

Clean Synthesis of Compounds Containing Two 4H‐Pyrans or Two Tetraketones in Aqueous Media

Synthetic Communications, 2005
Tong-Shou Jin, Li-Bin Liu
exaly  

X-Ray and theoretical structural study of novel 5,6,7,8-tetrahydrobenzo-4H-pyrans

Tetrahedron, 2002
Estael Ochoa, Yamila Verdecia, CARLOS Seoane   +2 more
exaly  

4H-Pyran to 4H-Thiin, 4H-Thiopyran

1999
openaire   +1 more source

Efficient Synthesis of Tetrahydrobenzo[b]pyrans under Solvent‐Free Conditions at Room Temperature

Synthetic Communications, 2006
Haiying Wang, Liangce Rong, Daqing Shi   +2 more
exaly