Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Dalimil Dvorak"'
Publikováno v:
ChemInform. 47
Publikováno v:
Collection of Czechoslovak Chemical Communications. 71:1221-1228
6-Allylpurine derivatives are formed by Cu(I)-catalyzed coupling of (9-benzyl-9H-purin-6-yl)- magnesium chloride with allyl halides. The reaction is accompanied by allylic rearrangement in some cases. Under acid conditions the double bond of the ally
Autor:
Dalimil Dvorak, Tomáš Tobrman
Publikováno v:
Tetrahedron Letters. 45:273-276
Alkenylation of 9-benzyl-6-halopurines with alkenes does not proceed under conventional Heck conditions. However, in the presence of triethylammonium formate a mixture of the corresponding saturated products was obtained. In contrast to the classical
Publikováno v:
Journal of Organometallic Chemistry. :329-333
Thermal reaction of iron aminocarbene complexes bearing aromatic substituent (CO) 4 FeC(Ar)N(CH 3 ) 2 with methyl acrylate, acrylonitrile and methyl vinyl ketone furnishes 1,4-dicarbonyl compounds — formal products of Michael addition of an acyl
Publikováno v:
ChemInform. 44
Autor:
Dalimil Dvorak
Publikováno v:
Organometallics. 14:570-573
Autor:
Dalimil Dvorak, Tomáš Tobrman
Publikováno v:
Organic Letters. 5:4289-4291
[reaction: see text] Halogen-metal exchange reaction of 9-benzyl-6-iodopurine with iPrMgCl in toluene at -80 degrees C proceeds almost quantitatively. Such a purine-derived Grignard reagent reacts selectively with aldehydes in toluene, giving the cor
Publikováno v:
The Journal of Organic Chemistry. 59:4917-4924
A kinetic study of the reactions of substituted benzylidenemalonodialdehydes, ZC 6 H 4 CH=C(CHO) 2 with Z=p-NMe 2 , p-OMe, m-OMe, p-Cl, p-Br, m-NO 2 , and p-NO 2 , with OH - and water in aqueous solution is reported. The reactions lead reversibly to
Publikováno v:
Tetrahedron Letters. 43:7867-7869
The Pd-catalyzed reaction of carbanions derived from chromium aminocarbene complexes with allylic acetates and carbonates smoothly affords the corresponding allyl-substituted aminocarbenes. On the contrary, the same reaction of the anion derived from
Publikováno v:
ChemInform. 42