Aminates of tin tetrachloride and titanium tetrachloride are reported. On the bases of these compounds, and the recovery of a tetraminate, SiCl4•4EtNH2, from among the substitution products in the reaction of silicon tetrachloride with ethylamine at −78 °C., it is suggested that the transition state in the substitution reaction corresponds to an addition compound.
Scope and advances in the catalytic propargylic substitution reaction