A photochemical source of dibromo- and dichlorocarbene
作者:John F Hartwig、Maitland Jones、Robert A Moss、Witold Ławrynowicz
DOI:10.1016/s0040-4039(00)85359-9
日期:1986.1
Photolysis of triene 3a or 3b yields dibromo- and dichlorocarbene which can be transferred to olefins in good yield. A warning is offered regarding the data recently interpreted as being “only consistent” with the formation of an intermediate in the addition of dibromocarbene to trans-cyclooctene.
NMR spectroscopy of organolithium compounds, part XXXIII: <i>trans</i>
-2,3-dimethylcyclopropyllithium aggregation in diethylether: An equilibrium between three different complexes of comparable energy and the influence of LiBr on aggregate structure
作者:Thomas Fox、Harald Günther
DOI:10.1002/poc.3800
日期:2018.5
The aggregate formation of trans‐2,3‐dimethylcyclopropyllithium (2) was studied in diethylether (DEE). With the help of the isotopic fingerprint method three clusters, a monomer, a dimer, and a fluxional tetramer in the ratio 1.00:0.53:0.22 were identified at 187 K. In the presence of 1 equivalent of LiBr cyclopropyllithium (1) forms in DEE at 163 K a mixed dimer and a mixed tetramer, while in THF
Jorritsma, R.; Steinberg, H.; Boer, Th. J. de, Recueil des Travaux Chimiques des Pays-Bas, 1981, vol. 100, # 5, p. 184 - 194
作者:Jorritsma, R.、Steinberg, H.、Boer, Th. J. de
DOI:——
日期:——
The synthesis of bismethylene derivatives of triangulanes
作者:Kirill A Lukin、Anna Yu Masunova、Bogdan I Ugrak、Nikolai S Zefirov
DOI:10.1016/s0040-4020(01)86528-5
日期:1991.7
A method for the preparation of an unique type of hyrocarbons, namely, bismethylene derivatives of linear triangulanes, has been developed, and the syntheses of 1,4-bismethylenespiropentane, 1,5-bismethylenedispiro[2.0.2.1]heptanes, and 1,6-bismethylenetrispiro[2.0.0.2.1.1]nonanes were realized.
Experimental evidence for a correlation between isoselective and isokinetic temperatures