Synthesis of Substituted β‐Functionalised Styrenes by Microwave‐Assisted Olefin Cross‐Metathesis and Scalable Synthesis of Apremilast
作者:Anupam Jana、Grzegorz Krzysztof Zieliński、Sylwia Czarnocka‐Śniadała、Krzysztof Grudzień、Dominika Podwysocka、Marcin Szulc、Anna Kajetanowicz、Karol Grela
DOI:10.1002/cctc.201901473
日期:2019.12.5
substituted β‐functionalised styrenes by microwave‐assisted olefin cross‐metathesis (CM) is described. This method can be also employed in the synthesis of β‐deuterated α,β‐unsaturated sulfones from inexpensive allylbenzenes, though unprecedented one‐pot isomerisation/deuteration/cross‐metathesis sequence. One of such obtained CM products has been utilised in a new scalable synthesis of Apremilast
描述了通过微波辅助烯烃交叉复分解(CM)制备不同取代的β-官能化苯乙烯的方法。尽管空前的一锅异构化/氘代/交叉复分解序列,该方法也可用于由廉价的烯丙基苯合成β-氘代的α,β-不饱和砜。这种获得的CM产品之一已被用于新的可扩展合成的Apremilast(6),一种有效且口服的磷酸二酯酶4和肿瘤坏死因子-α抑制剂。相同的策略用于合成6个对映体对映体Apremilast。