THE REACTION OF LAWESSON'S REAGENTS WITH 3,6-PYRIDAZINEDIONE AND 1,4-PHTHALAZINEDIONE
作者:A. A. Nada、N. Khir El-din、S. T. Gab-allah、M. F. Zayed
DOI:10.1080/10426500008045005
日期:2000.1
Abstract 2-Methyl-1-phenyl-1,2-dihydro-3,6-pyridazinedione (II) reacted with Lawesson's reagent (I) in different molar ratio, to give the dithione V and the monothiones VI and VII. 1-Phenyl-1,2-dihydro-3,6-pyridazinedione (III) reacted with reagents 1a-c to give the disulphide VIII. the dithione IX and 1,3,2-oxathiophosphole derivative XII. 2-Phenyl-2,3-dihydro-1,4-phthalazinedione (IV) reacted with
Pyridazines, 3-pyridazinones and 3,6-pyridazinediones readily undergo vicarious nucleophilic substitution of hydrogen (VNS) with carbanion of chloromethyl p-tolyl sulfone to form newcarbon-carbonbonds. The reaction offers a novel approach to the synthesis of functionalized pyridazine derivatives.
Reaction of 1,2-dimethyl- and 1-methyl-2-phenyl-1,2-dihydropyridazine-3,6-diones (I) with iron carbonyls gives iron tetracarbonyl complexes (II), which are converted to irontricarbonyls (III).