Pd-Catalyzed Oxidative Annulation of Hydrazides with Isocyanides: Synthesis of 2-Amino-1,3,4-oxadiazoles
摘要:
An efficient palladium-catalyzed oxidative annulation reaction was developed through sequential isocyanide insertions into N-H and O-H bonds of hydrazides, which provides an efficient access to valuable 2-amino-1,3,4-oxadiazoles and their derivatives.
Reactivity of benzohydrazide derivatives towards acetylation reaction. Experimental and theoretical studies
作者:Paola R. Campodónico、Margarita E. Aliaga、José G. Santos、Enrique A. Castro、Renato Contreras
DOI:10.1016/j.cplett.2010.01.052
日期:2010.3
We herein report an experimental and theoretical study on the acetylation reaction of benzohydrazide derivativestowards p-nitrophenyl acetate (NPA). The kinetic data are consistent with a stepwise mechanism with the nucleophilic attack as the rate determining step. From the theoretical analysis it is found that benzohydrazide derivatives establish intramolecular proton rearrangement. The enol form
作者:Rigo, Benoit、Fasseur, Dominique、Cauliez, Pascal、Couturier, Daniel
DOI:——
日期:——
Silberg; Cosma, Academia Republicii Populare Romine, Baza de Cercetari Stiintifice, Timisoara, Studii si Cercetari, Stiinte Chimice, 1959, vol. 10, p. 151,157, 158
作者:Silberg、Cosma
DOI:——
日期:——
1,5-DISUBSTITUTED TETRAZOLES FROM 1-ACETYL-2-para-SUBSTITUTED BENZOYL HYDRAZINES AND p-NITROBENZENEDIAZONIUM CHLORIDE<sup>*1</sup>
作者:JEROME P. HORWITZ、VYTAUTAS A. GRAKAUSKAS
DOI:10.1021/jo01367a007
日期:1954.2
RIGO, BENOLT;CAULIEZ, PASCAL, SYNTH. COMMUN., 18,(1988) N 11, C. 1247-1251