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Selective Reductions. 59. Effective Intramolecular Asymmetric Reductions of α-, β-, and γ-Keto Acids with Diisopinocampheylborane and Intermolecular Asymmetric Reductions of the Corresponding Esters with B -Chlorodiisopinocampheylborane

✍ Scribed by Ramachandran, P. Veeraraghavan; Pitre, Sangeeta; Brown, Herbert C.

Book ID: 121416707
Publisher: American Chemical Society
Year: 2002
Tongue: English
Weight: 89 KB
Volume: 67
Category: Article
ISSN: 0022-3263
DOI: 10.1021/jo025594y

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Selective Reductions. Part 59. Effective

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Efficient Intramolecular Asymmetric Redu

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✍ P. Veeraraghavan Ramachandran; Herbert C. Brown; Sangeeta Pitre 📂 Article 📅 2001 🏛 John Wiley and Sons ⚖ 34 KB 👁 1 views

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Rate enhancing effect of hydrogen chlori

Rate enhancing effect of hydrogen chloride and methanesulfonic acid on the intramolecular asymmetric reduction of 0-aminoaceto- and -benzophenones with diisopinocampheylborane

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While o-hyclroxyaceto-and -benzophenones undergo reduction with Behlorodiisopinoeampheyiborane (1) and diisopinoeampbeylborane (2) at the same rate, the reduction of o-carboxyaceto-and -benzopbenones Is fast~ with 2 as compared with 1. The rate retardation for the reaction of keto acids with 1 was a

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