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Catalytic Enantioselective and Catalyst-Controlled Diastereofacial-Selective Additions of Allyl- and Crotylboronates to Aldehydes Using Chiral Broensted Acids.

✍ Scribed by Vivek Rauniyar; Dennis G. Hall

Book ID
101991841
Publisher
John Wiley and Sons
Year
2006
Weight
42 KB
Volume
37
Category
Article
ISSN
0931-7597

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main product 19, ca. 20% of another stereoisomer. This results from a partial racemization of the ketone 5 occurring during its distillation or during the formation of 18. This follows from the condensation of racemic 5 with the aldehyde 15 affording with a 4: 1 selectivity the above mentioned by-pr