Reaktionen eines freien Stannaimins und von Basen‐stabilisierten Stannylenen

Reactions of a Free Stannaimine and of Base‐Stabilized Stannylenes The free stannaimine A reacts with methyllithium, 2,6‐diisopropylaniline, and methyl vinyl ketone to give the corresponding 1,2‐addition products (to the SnN bond) 2, 3 , and 10 . With 2,6‐diisopropylphenyl isocyanate and benzaldehyde [2 + 2] cycloadditions to the CO bonds lead to 4 and 5 , while with benzonitrile oxide and acroleine [2 + 3] and [2 + 4] cyclo‐additions produce 8 and 9 . The pyridine adducts bis‐[bis(trimethylsilyl)amino]stannylene and ‐germylene react with aryl azides to give the corresponding derivatives of tri‐amino‐2‐pyridylstannane 11 and ‐germane 12 . Bis[2‐pyridyl‐bis(trimethylsilyl)methyl]stannylene upon treatment with aryl azides form the 1‐aza‐8‐stannabicyclo[3.2.0]octa‐2,4,6‐triene systems 13 and 14 via stannaimine intermediates. X‐ray structure analyses are presented for 3, 11 , and 13 .