Results 171 to 180 of about 90,377 (200)

Amine-Catalyzed Asymmetric (3 + 3) Annulations of β'-Acetoxy Allenoates: Enantioselective Synthesis of 4H-Pyrans.

Journal of the American Chemical Society, 2016
Chunjie Ni, Xiaofeng Tong
semanticscholar   +1 more source

ChemInform Abstract: Structure of 2,4,4,6‐Tetraphenyl‐4H‐pyran.

ChemInform, 1990
J. VOJTECHOVSKY, J. HASEK
openaire   +1 more source

DABCO Catalyzed Green and Efficient Synthesis of 2-Amino-4H-Pyrans and Their Biological Evaluation as Antimicrobial and Anticancer Agents.

Combinatorial chemistry & high throughput screening, 2018
A. Waghmare, S. Pandit, D. Suryawanshi
semanticscholar   +1 more source

Introduction of a novel basic ionic liquid containing dual basic functional groups for the efficient synthesis of spiro-4H-pyrans

, 2016
O. Goli-Jolodar, F. Shirini, M. Seddighi
semanticscholar   +1 more source

An efficient and practical synthesis of specially 2-amino-4H-pyrans catalyzed by C4(DABCO-SO3H)2·4Cl

, 2016
O. Goli-Jolodar, Frahad Shirini, M. Seddighi   +2 more
semanticscholar   +1 more source

Cycloaddition Reactions of (Z)-β-Siloxyacrylonitriles with Enones: Synthesis of 4H-Pyrans and Dihydro-2H-pyrans

Synthesis, 1997
Asuncion Barbero, FRANCISCO J Pulido
exaly  

Enantioselective Synthesis of 4H‐Pyrans Through Organocatalytic Asymmetric Formal [3+3] Cycloadditions of 2‐(1‐Alkynyl)‐2‐alken‐1‐ones with β‐Keto Esters

, 2016
Zhenting Yue, Wenbo Li, Lu Liu, Cui-Hong Wang, Junliang Zhang   +4 more
semanticscholar   +1 more source

A simple base-mediated synthesis of diverse functionalized ring-fluorinated 4H-pyrans via double direct C-F substitutions.

Chemical Communications, 2015
Jieru Yang, A. Mao, Zhenting Yue, Wen-Ming Zhu, Xuewei Luo, Chuwei Zhu, Yuanjing Xiao, Junliang Zhang   +7 more
semanticscholar   +1 more source

Substituted 4H-pyrans

1998
URBAHNS KLAUS, HEINE HANS-GEORG, JUNGE BODO, MAULER FRANK, GLASER THOMAS, WITTKA REILINDE, DE VRY JEAN-MARIE-VIKTOR   +6 more
openaire   +1 more source

Synthesis of Some C‐4 Hydroxybenzo[c]pyrans: A New Approach

Synthetic Communications, 2006
Ivan Green, VÍCTOR I Hugo
exaly