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Preparation and crystal and molecular structure of erythro(1aα,2α,4aβ)-2-hydroxy-4a-methyl-1a,2,4,4a,5,6,7, 8-octahydro-3H-naphth-[1,8a-b]-oxirene-2β-(2′-methyl)-acetic acid methyl ester, C15H24O4

✍ Scribed by R. G. Hofstraat; J. W. Scheeren; R. P. F. Kanters; J. M. M. Smits; Paul T. Beurskens

Publisher
Springer
Year
1988
Tongue
English
Weight
212 KB
Volume
18
Category
Article
ISSN
1572-8854

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## Abstract Diels–Alder cycloaddition of a mixture of 1‐ and 2‐methylcyclopentadienes (1a and 1b, respectively) to 2‐methoxy‐__p__‐benzoquinone (2) gave a mixture of isomeric __endo__ [4 + 2] cycloadducts (3a–3d). Fractional recrystallization of this product mixture from EtOAc‐hexane gave 6‐methoxy