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- W2949854530 abstract "A simple and versatile synthesis of 3-methylidenechroman-2-ones and 2-methylidenedihydrobenzochromen-3-ones has been developed. The reaction of phenols or naphthols with 3-methoxy-2-diethoxyphosphorylacrylate gave intermediate 3-diethoxyphosphorylchromen-2-ones or 2-diethoxyphosphorylbenzochromen-3-ones, respectively. These compounds were employed as Michael acceptors in the reaction with Grignard reagents to yield 4-substituted 3-diethoxyphosphorylchroman-2-ones or 1-substituted 2-diethoxyphosphoryldihydrobenzochromen-3-ones. The obtained adducts were next used as Horner-Wadsworth-Emmons reagents for the olefination of formaldehyde to give the final products." @default.
- W2949854530 created "2019-06-27" @default.
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- W2949854530 date "2010-11-11" @default.
- W2949854530 modified "2023-09-24" @default.
- W2949854530 title "A Convenient Entry to 3-Methylidenechroman-2-ones and 2-Methylidenedihydrobenzochromen-3-ones" @default.
- W2949854530 doi "https://doi.org/10.1055/s-0030-1259046" @default.
- W2949854530 hasPublicationYear "2010" @default.
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