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Jean-Pierre Dulcere 《Tetrahedron letters》1981,22(17):1599-1600
Chloromethylenedimethylammonium chloride was used to convert aldoximes to nitriles . 相似文献
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Alkenes 1 a-f are converted in three steps into the allyl alcohols 4 a-f; the cohalogenation of alkenes by NBS in alcohols constitutes the first step of this synthesis. 相似文献
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β-allenic alcohols substituted by a trimethylsilyl group at the ?1 or ?3 position respectively give rise to γ or δ-lactones. In the last case, a concerted mechanism is involved 相似文献
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Alkenes a–d interact at ?80°C in 15 min. with the Vilsmeier reagent (Me2N=CHCl)+PO2Cl2? in presence of 30% H2O2 to yield the corresponding epoxides a–d. The reaction could involve the formation of the highly reactive hydroperoxymethylenedimethylammonium salt (Me2N=CHOOH)+PO2Cl?2. 相似文献
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Jérôme JP. Leon 《Letters in Mathematical Physics》1981,5(1):75-80
We establish a transformation which connects the potentials of the one-dimensional Dirac and Klein-Gordon operators. This transformation links the solutions of the nonlinear evolution equations solvable by means of the two inverse spectral transforms which use the Dirac and Klein-Gordon direct and inverse spectral problems. 相似文献
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The coupling between the 5-chloro-3-en-1-ynes - and trimetylchlorosilane gives rise to the vinylallenes - substituted by a trimethylsilyl group on the allenic moiety. 相似文献
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