Reactions of allylic carbonates catalyzed by palladium, rhodium, ruthenium, molybdenum, and nickel complexes; allylation of carbonucleophiles and decarboxylation- dehydrogenation
作者:Ichiro Minami、Isao Shimizu、Jiro Tsuji
DOI:10.1016/0022-328x(85)80354-5
日期:1985.11
carbonucleophiles with allylic carbonatescatalyzed by various transition metal complexes has been studied. Palladium, rhodium, ruthenium, nickel, and molybdenum complexes were found to be active catalysts. The rhodium catalyst showed a different regioselectivity from the other catalysts, the reaction can proceed without allylic rearrangement. In the absence of nucleophiles, allyl alkyl carbonates were converted into
Influence du cuivre sur la substitution des énolates stables par divers halogénures allyliques
作者:Thérèse Cuvigny、Marc Julia
DOI:10.1016/s0022-328x(00)98920-4
日期:1987.9
The allylic substitution, by a variety of allylic halides, of stable enolates derivedfrom diethyl malonate, ethyl cyanoacetate, ethyl acetoacetate and acetylacetone has been investigated. The yields and regioselectivity of these reactions are strongly influenced by cuprous ions (and their ligands).
Synthesis of 4,5,6-trisubstituted 3-cyanopyridine-2(1H)-thiones based on ?-substituted ?-diketones
作者:N. G. Frolova、V. K. Zav'yalova、V. P. Litvinov
DOI:10.1007/bf01431119
日期:1996.11
5-Substituted 3-cyano-4,6-dimethylpyridine-2(1H)-thiones were synthesized by the reaction of alpha-substituted beta-diketones with cyanothioacetamide in the presence of triethylamine. The compounds synthesized were converted into thieno[2,3-b]pyridines by treatment with organic halides and KOH.