Synthese und Reaktionen von ?-Campholenverbindungen
摘要:
In contrast to the well known alpha-campholenic (B) and fencholenic compounds (C) little is known about beta-campholenic derivatives (A) because of their difficult accessibilitiy. Beta-campholenic compounds (A) can be obtained: (1) by Baeyer-Villiger oxidation of camphor via lactone 7 and beta-dihydrocampholenic lactone (5); (2) by Beckmann fragmentation of camphor oxime via alpha-(2) and beta-campholenic nitril (3) and the lactone 5; and (3) by acid catalysed rearrangement of alpha-campholenic derivatives (B, 17a, b). The beta-analogous brahmanol (14) can be synthesized by the reaction of the beta-campholenic bromide (11) with methyl diethyl malonate or by rearrangement of brahmanol.
Synthese und Reaktionen von ?-Campholenverbindungen
摘要:
In contrast to the well known alpha-campholenic (B) and fencholenic compounds (C) little is known about beta-campholenic derivatives (A) because of their difficult accessibilitiy. Beta-campholenic compounds (A) can be obtained: (1) by Baeyer-Villiger oxidation of camphor via lactone 7 and beta-dihydrocampholenic lactone (5); (2) by Beckmann fragmentation of camphor oxime via alpha-(2) and beta-campholenic nitril (3) and the lactone 5; and (3) by acid catalysed rearrangement of alpha-campholenic derivatives (B, 17a, b). The beta-analogous brahmanol (14) can be synthesized by the reaction of the beta-campholenic bromide (11) with methyl diethyl malonate or by rearrangement of brahmanol.
One-step annulation. A convenient method for the preparation of diols, spirolactones, and spiroethers from lactones
作者:Persephone Canonne、Georges B. Foscolos、Denis Belanger
DOI:10.1021/jo01298a016
日期:1980.5
<b>Highly Strained Bicyclic Systems. VI.</b><sup>1</sup> <b>Reactions of 1,5,5-Trimethylbicyclo[2.1.1]-hexane-6-carboxylic Acid and the Synthesis of Bicyclo[2.1.1]hexyl Analogs of Borneol and Isoborneol</b><sup>2</sup>
作者:Jerrold. Meinwald、Arthur. Lewis、Paul G. Gassman