The synthesis of isochroman-4-ols and isochroman-3-ols: models for naturally occurring benzo[g]isochromanols
作者:Charles B de Koning、Ivan R Green、Joseph P Michael、José R Oliveira
DOI:10.1016/s0040-4020(01)00963-2
日期:2001.11
The synthesis of isochromanes containing hydroxy substituents at the 4- and 3-positions has been achieved. The key step for the synthesis of the isochroman-4-ols entailed an oxidative mercury mediated ring closure of 2-(prop-1-enyl)phenylmethanol derivatives, while in the synthesis of the isochroman-3-ols the key step involved ozonolysis of 2-(prop-2-enyl)phenylmethanol derivatives. (C) 2001 Elsevier Science Ltd. All rights reserved.
Synthesis of Some C‐4 Hydroxybenzo[<i>c</i>]pyrans: A New Approach
作者:Victor I. Hugo、Tebogo Masenya、Ivan R. Green
DOI:10.1080/00397910600592001
日期:2006.6.1
Abstract A new synthetic approach to the synthesis of some epimeric C‐4‐hydroxy‐benzo[c]pyrans is described. A key step in their formation is stereoisomerisation of a nonconjugated ortho alkenylphenylketone and ‐ester using palladium bisacetonitrile [bisacetonitriledichloropalladium(II)] to give the corresponding conjugated E stereoisomers which cyclize on treatment with meta‐chloroperbenzoic acid