The efficient generation of 3-triflyloxyarynes, including those bearing a transformable group, through an iodine-magnesium exchange reaction of 1,3-bis(triflyloxy)-2-iodoarenes was achieved by using finely tuned reaction conditions that efficiently suppressed the competing thia-Fries rearrangement. The method enabled the facile synthesis of a wide range of multisubstituted arenes.
A method for the highly regio- and enantioselective oxidativecoupling of resorcinols has been established by using dibrominated dinuclear vanadium(V) catalyst 1c under air. When resorcinols bearing an aryl substituent were applied as substrates to the coupling, axially chiral biresorcinols were obtained as single regioisomers in high yield with up to 98% ee.
本发明公开了一种 C 2‑对称性手性芳基碘催化剂的合成方法,属于有机化学技术领域。该方法是以廉价的3,5‑二甲氧基溴苯作为起始原料,通过与一系列芳基硼酸发生经典的Suzuki‑Miyaura偶联得到中间体3,5‑二甲氧基联苯,随即在三溴化硼作用下脱甲基保护基得到中间体3,5‑二羟基联苯;接下来,经过芳香族碘代,Mitsunobu反应引入手性源得到手性芳基碘酯类衍生物;将手性芳基碘酯类衍生物水解后,通过酰氯化与二级胺(二环己基胺)缩合得到目标手性芳基碘催化剂,总产率高达13.3%。
Chandrasekharan,V. et al., Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1978, vol. 16, p. 970 - 972
作者:Chandrasekharan,V. et al.
DOI:——
日期:——
Jaxa-Chamiec, Albert A.; Sammes, Peter G.; Kennewell, Peter D., Journal of the Chemical Society. Perkin transactions I, 1980, p. 170 - 175
作者:Jaxa-Chamiec, Albert A.、Sammes, Peter G.、Kennewell, Peter D.
DOI:——
日期:——
Controlled Generation of 3-Triflyloxyarynes
作者:Suguru Yoshida、Takamitsu Hosoya、Keisuke Uchida
DOI:10.1055/s-0035-1562532
日期:——
The efficient generation of 3-triflyloxyarynes, including those bearing a transformable group, through an iodine-magnesium exchange reaction of 1,3-bis(triflyloxy)-2-iodoarenes was achieved by using finely tuned reaction conditions that efficiently suppressed the competing thia-Fries rearrangement. The method enabled the facile synthesis of a wide range of multisubstituted arenes.