Examination of Synthetic Routes to Monosubstituted Diimides. II. Synthesis of t-Butyl Aryl- and Acylazoformates. Acid-Induced Cleavage of the Thionocarbo-t-butoxy Group<sup>1,2</sup>
作者:LOUIS A. CARPINO、PAUL H. TERRY、PAUL J. CROWLEY
DOI:10.1021/jo01069a037
日期:1961.11
Synthesis of <i>N</i>-Aryl Hydrazides by Copper-Catalyzed Coupling of Hydrazides with Aryl Iodides
作者:Martina Wolter、Artis Klapars、Stephen L. Buchwald
DOI:10.1021/ol0168216
日期:2001.11.1
[GRAPHICS]A convenient method for intermolecular N-arylation of hydrazides with substituted aryl iodides in the presence of a copper catalyst and Cs(2)CO(3) is reported. The C-N coupling of N-Boc hydrazine with para- and meta-substituted aryl iodides afforded the N-arylated products A, regioselectively. A reversal in regioselectivity is observed for the arylation of benzoic hydrazide with ortho-substituted aryl iodides, providing the N'-arylated products B.