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Efficient Enantioselective Synthesis of Chiral Precursors for the Preparation of Vitamin E (1997)

Tietze, Lutz F. ; Görlitzer, Jochen

Weinheim : Wiley-Blackwell

Liebigs Annalen 1997 (1997), S. 2221-2225

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ISSN: 0947-3440

Keywords: Vitamin E ; Enynes ; Bishydroxylation ; Palladium ; Asymmetric synthesis ; Chemistry ; Organic Chemistry

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Notes: Enantioselective bishydroxylation of the protected hydroxymethyl enynes 7a-d and 8a, b, which are easily obtained from commercially available 5 and 6, gave the triol derivatives 9a-d and 11a, b in good yields and moderate to high enantiomeric excess. Palladium-catalyzed coupling of 9a-d and 11a, b with the iodoarene 13 led to the desired precursors for the vitamin E synthesis ent-3a-d and 15a, b.

Additional Material: 3 Tab.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/jlac.199719971108

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