Facile and Efficient Synthesis of Benzoxazoles and Benzimidazoles: The Application of Hantzsch Ester 1,4-Dihydropyridines in Reductive Cyclization Reactions
Both benzoxazole and benzimidazole are common heterocyclic scaffolds in biologically active and medicinally significant compounds. Reductivecyclization of ortho-substituted nitrobenzene derivatives provides an attractive route to benzoxazole or benzimidazole ring formation. Unfortunately, only a few synthetic methods by reductivecyclization of ortho-nitro compounds have been reported and the yields
Electrostatic catalysis. II. Comparison of spontaneous and alkaline hydrolytic rate constants for .alpha.-substituted o-nitrophenyl esters
作者:Barton Holmquist、Thomas C. Bruice
DOI:10.1021/ja01039a027
日期:1969.5
A Convenient One-Pot Completely Stereoselective Synthesis of <i>trans</i>-4-Hydroxystilbenes and Its Derivatives and X-Ray Structure of Its Precursor
作者:Rakeshwar B. Chhor、Kunwar A. Singh、B. Nosse、Vishnu K. Tandon
DOI:10.1081/scc-120021843
日期:2003.1.8
Abstract The synthesis of E-isomer of 4-Hydroxystilbene and its derivatives 3 by reductive elimination of the carbonyl function in 2-phenyl-1-(4-hydroxyphenyl)ethan-1-one and its derivatives 2 and the X-raystructure of 2a are described.