作者:Benjamin List、Michael Stadler
DOI:10.1055/s-2008-1032095
日期:——
A direct method for the synthesis of β,β-disubstituted-α,β-unsaturated aldehydes via Heck reaction of aryl halides with crotonaldehyde and related substrates has been developed. The reaction provides rapid access to products usually prepared via multistep sequences. The power of the method in combination with an organocatalytic transfer hydrogenation is illustrated with a short asymmetric synthesis of (S)-Florhydral®.
已开发出一种通过卤代芳烃与克罗烯醛及相关底物的赫克反应合成β,β-取代的α,β-不饱和醛的直接方法。该反应能够快速获得通常需要多步合成的产物。该方法与有机催化转移氢化结合的强大之处通过(S)-Florhydral®的短链不对称合成得到了体现。