Abstract
AbstractAlkenylsilanes bearing chlorosilyl and boryl groups geminally attached to a carbon atom ((E)‐3‐(9‐borabicyclo[3.3.1]nonan‐9‐yl)‐N,N‐dimethyl‐3‐(trichlorosilyl)prop‐2‐en‐1‐amine, 1, (1‐(9‐borabicyclo[3.3.1]nonan‐9‐yl)‐3,3‐dimethylbut‐1‐en‐1‐yl)dichloro (phenyl)silane, 2, (1‐(9‐borabicyclo[3.3.1]nonan‐9‐yl)‐2‐phenylvinyl) chloro (methyl)(phenyl)silane, 3, (1‐(9‐borabicyclo[3.3.1]nonan‐9‐yl)hex‐1‐en‐1‐yl)trichlorosilane, 4) are accessible by hydroboration of the corresponding alkynylsilanes. Only the vinyl group of 1 adopted E configuration, which may be favored by ring closure via an intramolecular B–N bonding interaction. Compounds 2–4 reacted with N‐trimethylsilylpyrazole and N‐2‐(trimethylsilylamino)pyridine by elimination of ClSiMe3 and formation of Si–N bonds. Intramolecular donor–acceptor interactions between the N and B atoms afforded five‐ and six‐membered heterocycles, which contained Si, N, and B as heteroatoms. A bis(pyrazolyl)silane was isolated upon treatment of a dichlorosilane with two equivalents of trimethylsilylpyrazole.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call