• substituted homoallenyl aldehydes and their derivatives. part 1: homoallenyl aldehydes and protected hydrazones

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 838
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     the paper presents a simple synthesis of substituted propargyl vinyl ethers and their subsequent thermally-initiated claisen rearrangement leading to various 3-substituted homoallenyl aldehydes. several methods, including sonogashira coupling, base-promoted substitution on the triple bond by sodium amide or butyllithium, and the preparation of substituted propargyl alcohols, were used in the initial step. phosphate-protected homoallenyl aldehyde hydrazone derivatives were synthesised and fully characterised. the stereochemistry of 9-anthracene carbaldehyde hydrazone, which, surprisingly, afforded both cis and trans isomers, was established using x-ray analysis.

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