Lewis Acid-Mediated Friedel–Crafts-Type Formylation of Alkenes with Dichloromethyl Methyl Ether in the Presence of Pyridines
作者:Shinya Tanaka、Yuji Yoshii、Tetsutaro Hattori
DOI:10.1021/acs.joc.3c02059
日期:2024.3.1
methyl ether (MOMCl2) by the combined use of SnCl4/2,6-dibromopyridine (B1) or AgOTf/pyridine (B4) via Friedel–Crafts-type reaction. The former reagent combination is mainly applied to α,α-diarylalkenes, while the latter one is applied not only to arylalkenes but also to some alkylalkenes. Vinyl aldehydes are exclusively obtained from alkenes that can possibly afford both allyl and vinyl aldehydes.
通过组合使用 SnCl 4 /2,6-二溴吡啶 ( B1 ) 或 AgOTf/吡啶 ( B4 ),通过 Friedel-Crafts 型反应,将各种烯烃用二氯甲基甲基醚 (MOMCl 2 ) 甲酰化。前一种试剂组合主要适用于α,α-二芳基烯烃,而后者不仅适用于芳基烯烃,还适用于部分烷基烯烃。乙烯基醛完全由可以同时提供烯丙基醛和乙烯基醛的烯烃获得。