Es wurde untersucht, unter welchen optimalen Bedingungen sich ein Zucker (I) in Gegenwart von Phenylaminen (II) und einem sauren Katalysator zum N‐Aryl‐glykosylamin (IV) umlagert.
Upon reaction with the sodium alcoholates (II), the chloromethylsilatrane (I) rearranges by ring expansion, giving the alkoxy‐2‐carba‐3‐ oxa‐homosilatranes (III).
Temperature dependence of nuclear decays in metallic environments is a controversial issue. We measured the temperature dependence of the β + -decay half-life of 22 Na implanted into the metal host of palladium. It is found that the β + -decay half-life of 22 Na in the metal Pd cooled to T = 15 K is shorter by 0.46(14)% than that at room temperature. The result is consistent in sign with, but clearly smaller than, the estimated one by the Debye model.
Uracil (I) und Trimethyl‐chlorsilan (II) reagieren in Dioxan bei Zimmertemperatur in Gegenwart von Triäthylamin quantitativ zu Bis‐trimethylsilyl‐uracil (III).
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