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ChemInform Abstract: A Bridged Spiro[6.6]silatridecane via Double 7-endo Radical Cyclization.

โœ Scribed by Z. TENG; R. KEESE; H. STOECKLI-EVANS

Publisher
John Wiley and Sons
Year
2010
Weight
29 KB
Volume
29
Category
Article
ISSN
0931-7597

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โœฆ Synopsis

A Bridged Spiro[6.6]silatridecane via Double 7-endo Radical Cyclization.

-The intramolecular radical induced reaction of (I) proceeds with high regioselectivity to give the title compound (II) and, in addition, the bicyclic trisilane (III). -(TENG, Z.;

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Unexpected Stereoselective 6-exo versus 7-endo Aryl Radical Cyclization Controlled by Positional Isomers in a Chiral Octahydro-1,3-benzoxazine Moiety. -Radical cyclization of benzoxazine (I) results in formation of two major cyclization diastereomers (II) and (III) via a 6-exo-trig process. Surpris