Zobrazeno 1 - 10
of 54
pro vyhledávání: '"S. Borčić"'
Publikováno v:
J. Chem. Soc. A. :586-589
The hybridisation in cyclopropene, cyclobutene, 1-methylcyclobutene, and 3-methylcyclobutene, all containing a double bond in the ring, is considered by applying the method of maximum overlap. The results show a considerable increase in s-contributio
Publikováno v:
Helvetica Chimica Acta. 40:2477-2480
Bei der Acetolyse von funf reprasentativen, in Stellung 1 des Alkyl-, Cycloalkyl- bzw. Aralkyl-Restes deuterierten Sulfonaten wurde ein kinetischer Isotopen-Effekt kH/kD = 1,12–1,19 pro Deuterium-Atom festgestellt.
Publikováno v:
Pure and Applied Chemistry. 8:405-408
Publikováno v:
Tetrahedron. 24:1247-1253
The kinetic isotope effects on the solvolysis of a series of 1-methyl-d 3 compounds was determined. A linear correspondence between α-methylsubstituent effects and methyl-d 3 isotope effects is presented and discussed.
Publikováno v:
Helvetica Chimica Acta. 41:199-204
Das durch Acetolyse von Cyclodecyl-[1-D]-p-toluolsulfonat erhaltene trans-Cyclodecen wurde systematisch bis zur Adipinsaure abgebaut und in den Abbau-Produkten das Deuterium bestimmt. Die auf diese. Weise gefundene Deuterium-Verteilung zeigt, dass ei
Effect of deuterium substitution on the solvolysis rates of (methylcyclopropyl)-carbinyl derivatives
Publikováno v:
Pure and Applied Chemistry. 8:441-448
Publikováno v:
Croatica Chemica Acta
Volume 49
Issue 4
Volume 49
Issue 4
Specifically deuterated brosylates of unsaturated carbinols with endo-, exo-fused norbornanes structure 4-0H were prepared and their acetolysis rates measured at 25.0 °c. A secondary a-deuterium isotope effect of kH/kn = 1.20 was obtained which is c
Publikováno v:
Croatica Chemica Acta
Volume 51
Issue 3
Volume 51
Issue 3
Specifically deuterated 4-methoxy-1-pentyl broij'ylates (IP- 1,1-d2, IP-2,2-d2) and 5-methoxy-2-pentyl brosylates (IS-2-d, 1S- -1 ,1,1 - d3, 1S-OCD3) were prepared, their solvolysis rates measured in 950/o ethanol and the corresponding kinetic second
Publikováno v:
Croatica Chemica Acta
Volume 38
Issue 1
Volume 38
Issue 1
Herewith we wish report about an interesting case of deuterium scrambling during the attempted preparation of exo-norbornanol-3,3-d2 from the endoisomer through equilibration with the aid of fluorenone.
Autor:
S. Borčić, D. E. Sunko
Publikováno v:
Croatica Chemica Acta
Volume 33
Issue 2
Volume 33
Issue 2
The acetolysis vs. internal rearrangement products ratio was determined for cyclopropylmethyl, cyclopropylmethyi-1 ,1-dii and -3,3-d2 benzenesulfonate and was found to remain constant within the experimental error. The results confirm that both concu