ISSN:
1434-1948
Keywords:
Silicon
;
Silylene
;
Azobenzene
;
1-Adamantyl azide
;
Addition reactions
;
Chemistry
;
General Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Reactions of the sterically encumbered silylenes R2Si: (R = 2,4,6-Me3C6H2, 2,4,6-iPr3C6H2) with azobenzene are thought to proceed via the [2+1] cycloaddition products, followed by insertion of the N-N single bond into the ortho-C-H bond of one of the phenyl rings or into the C-HMe2 bond of one of the ortho-isopropyl groups to furnish the 1,3-diaza-2-silaindan (4) or 1-aza-2-silaindan (5) derivatives, respectively. The reactions of these silylenes with 1-adamantyl azide seem to proceed through the silanimines and 4-azahomoadamantene intermediates which, by [2+2] cycloadditions, afford the 1,3-diaza-2-silacyclobutane derivatives 11 and 12. The structures of 4, 5, 11, and 12 were determined by X-ray crystallography.
Additional Material:
3 Ill.
Type of Medium:
Electronic Resource
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