88281-71-4Relevant academic research and scientific papers
1,3-Butadienyl-thiocyanate in der Diels-Alder-Reaktion mit anschliessender -sigmatroper Umlagerung
Huber, Stefan,Stamouli, Peristera,Jenny, Titus,Neier, Reinhard
, p. 1898 - 1915 (1986)
(E)- and (Z)-1,3-Butadienyl thiocyanates 3, 4, and 12-15 have been synthesized selectively.Their use as dienes for Diels-Alder reactions followed by -sigmatropic shift to obtain an isomeric isothiocyanate has been studied.The butadienyl thiocyanates are, unfortunately, not very reactive in Diels-Alder reactions.This disadvantage can be overcome, if a trapping reaction with EtOH is added to the two-step sequence.This sequence allows to get good yields of the O-ethyl thiocarbamates 18-23, even if the first two reactions have not favorable equilibrium constants.
CYCLOFUNKTIONALISIERUNG VON N-CYCLOHEXENYL- bzw. N-CINNAMYLURETHANEN zu OXAZOLIDIN-2-ONEN bzw. 1,3-OXAZIN-2-ONDERIVATEN
Muehlstaedt, M.,Olk, B.,Widera, R.
, p. 3979 - 3980 (2007/10/02)
The cyclofunctionalization of N-3-cyclohexenyl urethanes and - thiourethanes and a new synthesis of N-substituted tetrahydro-2H-1,3-oxazine-2-ones are described.
