Pyrrolidine → Bis(pyrrolidino)silacyclobutane

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Bis(pyrrolidino)silacyclobutane was synthesized by reacting 1,1-dichlorosilacyclobutane with an excess amount of pyrrolidine (Equation 3). To do so, 23.7 ml (0.200 mol) 1,1-dichlorosilacyclobutane was added to 100.0 ml (1.20 mol) pyrrolidine in 1 L hexanes at −10° C. After bodying for two day at the room temperature, the reaction slurry was filtered to remove pyrrolidine hydrochloride salt. The filtrant was vacuum dried to give a liquid crude product which was then vacuum distilled. 15.4 g Product was isolated at 99.7% purity in 34% yield at 51° C. under 1 torr pressure. The structure of the product analyzed with 1H, 13C and 29Si NMR, FT-IR and GC-MS was in consistence with bis(pyrrolidino)silacyclobutane.

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