Chemical Structure from Scientific Research

Preparation of 1 via dehydrobromination with parent N-heterocyclic carbene-phosphinidene (NHCP), silicon tetrabromide and 1,4-diazabicyclo[2.2.2]octane (DABCO) (i). Simultaneous metathesis and reduction of 1 with two equivalents of potassium silanide furnished 2 (ii). Exposure of 2 to an excess of carbon dioxide resulted in the formation of silicon carbonate complex 3 (iii). In similar fashion, silirane 4 was obtained in the reaction of 2 with ethylene (iv).

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