Remarkable, contrasteric, electrocyclic ring opening of a cyclobutene
作者:William R. Dolbier、Henryk Koroniak、Donald J. Burton、A. R. Bailey、G. S. Shaw、S. W. Hansen
DOI:10.1021/ja00318a071
日期:1984.3
Etude thermodynamique et cinetique de la decyclisation des cis et trans bis-trifluoromethyl-3,4 tetrafluoro-1,2,3,4 cyclobutenes
顺式和反式双三氟甲基-3,4 四氟-1,2,3,4 环丁烯去环化练习曲
Transformations of <i>F</i>-Alkyl Iodides and Bromides Induced by Nickel(0) Carbonyl
作者:Carl G. Krespan、David A. Dixon
DOI:10.1021/jo970805y
日期:1998.1.1
Adducts of primary F-alkyl iodides with nickel carbonyl are formed readily in donor solvents and pyrolyze at 100-150 degrees C to give olefinic coupling products in high yield. The mechanism proposed to account for the observed chemistry involves preferential alpha-elimination of fluorine with formation of a carbenoid species complex coordinated to nickel. Differences in reaction paths among several types of substrate halides are rationalized on the basis of polarization of the Ni-C bond in the adducts, Support for these proposals is provided by state-of-the-art calculations.
Kinetic and thermodynamic studies of the thermal electrocyclic interconversions of perfluorinated dienes and cyclobutenes
作者:William R. Dolbier、Henryk Koroniak、Donald J. Burton、Pamela L. Heinze、A. R. Bailey、G. S. Shaw、S. W. Hansen
DOI:10.1021/ja00235a032
日期:1987.1
Les dienes (Z,Z) ou (Z) presentent un avantage cinetique important sur les dienes (E,L) ou (E) dans leur processus de cyclisation
Les dienes (Z,Z) ou (Z) presentent un avantage cinetique important sur les diene (E,L) ou (E) dans leur processus de cyclisation