Summary.
This review describes the synthesis and isomerization reactions of cyclic silylhydrazines. Topics of discussion are the ring expansion of the three-membered Si(SiN2) to the four-membered (SiN)2 ring by lithiation of the (SiN2) ring and by thermal silyl group insertion into the N*N bond, the ring expansion of a three-membered (SiN2) to a five-membered (CSi2N2) ring by SiCH2 insertion into the Si*N bond, the formation of isomeric four- and six-membered (SiN2)2 rings, the synthesis of five- and six-membered silylhydrazine rings, and the expansion of a five-membered (N2Si2N)N ring to the isomeric six-membered (SiNN)2 ring. The mechanisms of the isomerizations are explained by quantum chemical calculations, and the results are verified by crystal structure determinations.
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Received February 23, 2001. Accepted (revised) April 24, 2001
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Klingebiel, U., Schmatz, S., Gellermann, E. et al. Cyclization and Isomerization Reactionsin Silylhydrazine Chemistry. Monatshefte fuer Chemie 132, 1105–1124 (2001). https://doi.org/10.1007/s007060170027
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DOI: https://doi.org/10.1007/s007060170027