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Asymmetric carbinol synthesis by means of (−)-sparteine-modified organometallic reagents

✍ Scribed by H. Nozaki; T. Aratani; T. Toraya

Publisher
Elsevier Science
Year
1968
Tongue
French
Weight
110 KB
Volume
9
Category
Article
ISSN
0040-4039

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✦ Synopsis

The reactivity of n-butyllithium is enhanced by coordinating tertiary diamines (1:. (_),+~e& ; J_*_Jn,* a 3r L,i#&*>*.&* l&gz3>* &,->*s a, .me&,,i,& ~l&$&~f_3&~, .&LZ.>> jB&s_*a ~~<~mm,*fri)r_ ring ffpprffiibg u? ~-bi~~~~rrocg-clu~~u~~ryl?s i:ezbing tu active sllsaic X+~313rb~'rs <2>.

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Stereoselective Synthesis of Sphinganine by Means of Modified Asymmetric Borane Reduction. -A modified asymmetric borane reduction of the ester (I) and the related silyl ether (V) are described. Thus, reduction of the ester yields mainly the threo compound, whereas the silyl ether affords the desir