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Synthesis 2011(13): 2062-2065
DOI: 10.1055/s-0030-1259989
DOI: 10.1055/s-0030-1259989
PSP
© Georg Thieme Verlag
Stuttgart ˙ New York
Shortened Synthesis of a Silicon-Stereogenic Cyclic Silane
Further Information
Received
2 March 2011
Publication Date:
05 April 2011 (online)
Publication History
Publication Date:
05 April 2011 (online)
Abstract
The previous racemic synthesis of a six-membered ring silane from tert-butyltrichlorosilane required six steps (22% overall yield). A considerably shortened reaction sequence now allows for its preparation from rarely used tert-butylsilane in only two steps (42% overall yield). The new access also offers more facile purification of the intermediate(s) and the target compound.
Key words
cyclization - Grignard reaction - hydrosilylation - nucleophilic substitution - silicon
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For RSiH3 with R = alkyl but not aryl, the effect of LiCl is less pronounced (cf. Equation 8 in ref. 12).