699-01-4Relevant articles and documents
Enantioselective Resolution Copolymerization of Racemic 2,3-Disubstituted cis-Epoxides with CO2 Mediated by Binuclear Cobalt(III) Catalyst?
He, Guang-Hui,Liu, Yan-Lan,Liu, Ye,Lu, Xiao-Bing
, p. 2386 - 2390 (2021/07/12)
Enantioselective resolution copolymerization of racemic internal epoxides with carbon dioxide (CO2) is a challenging issue because of their poor reactivity and complicated regio/stereoselectivity. Herein, we describe the first enantioselective
Synthesis of Substituted β-Functionalised Styrenes by Microwave-Assisted Olefin Cross-Metathesis and Scalable Synthesis of Apremilast
Jana, Anupam,Zieliński, Grzegorz Krzysztof,Czarnocka-?niada?a, Sylwia,Grudzień, Krzysztof,Podwysocka, Dominika,Szulc, Marcin,Kajetanowicz, Anna,Grela, Karol
, p. 5808 - 5813 (2019/11/03)
Preparation of diversely 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 (6), a potent and orally active phosphodiesterase 4 and tumour necrosis factor-α inhibitor. The same strategy was used in synthesis of an optical antipode of 6, ent-Apremilast.
Alkene functionalization for the stereospecific synthesis of substituted aziridines by visible-light photoredox catalysis
Yu, Wan-Lei,Chen, Jian-Qiang,Wei, Yun-Long,Wang, Zhu-Yin,Xu, Peng-Fei
supporting information, p. 1948 - 1951 (2018/03/01)
A novel strategy involving visible-light-induced functionalization of alkenes for the synthesis of substituted aziridines was developed. The readily prepared N-protected 1-aminopyridinium salts were used for the generation of N-centered radicals. This approach allowed the synthesis of aziridines bearing various functional groups with excellent diastereoselectivity under mild conditions. Moreover, this protocol was successfully applied to prepare structurally diverse nitrogen-containing frameworks.