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Enantioselective Cyanosilylation of Aldehydes Catalyzed by a Novel N,N′-Dioxide-Ti(OiPr)4 Bifunctional Catalyst.

✍ Scribed by Baiqing Zeng; Xin Zhou; Xiaohua Liu; Xiaoming Feng

Publisher: John Wiley and Sons
Year: 2007
Weight: 28 KB
Volume: 38
Category: Article
ISSN: 0931-7597
DOI: 10.1002/chin.200737083

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## Abstract A new catalytic system, generated from the readily available and inexpensive β‐sulfonamide alcohol L\*, Ti(O^i^Pr)~4~, Et~2~Zn, and tertiary amine base (R~3~N), effectively catalyzes the enantioselective addition of various terminal alkynes including some quite challenging alkynes to al