Ag(I)-Catalyzed Aminofluorination of Alkynes: Efficient Synthesis of 4-Fluoroisoquinolines and 4-Fluoropyrrolo[α]isoquinolines
作者:Tao Xu、Guosheng Liu
DOI:10.1021/ol3026507
日期:2012.11.2
A silver-catalyzedintramolecular oxidative aminofluorination of alkynes has been developed by using NFSI as a fluorinating reagent. This reaction represents an efficient method for the synthesis of various 4-fluoroisoquinolines and 4-fluoropyrrolo[α]isoquinolines.
One-Pot Synthesis of 1-(Trifluoromethyl)-4-fluoro-1,2-dihydroisoquinolines and 4,4-Difluoro-1,2,3,4-tetrahydroisoquinolines
作者:Qilun Liu、Yichen Wu、Pinhong Chen、Guosheng Liu
DOI:10.1021/ol403059z
日期:2013.12.20
A cascade approach to 1-(trifluoromethyl)-4-fluoro-1,2-dihydroisoquinolines and 4,4-difluorotetrahydroisoquinolines has been developed. The procedure involves a silver-catalyzedintramolecularaminofluorination of alkyne. This one-pot reaction provides an efficient way to synthesize various fluorinated isoquinolines.
A Dramatic Substituent Effect in Silver(I)-Catalyzed Regioselective Cyclization of ortho-Alkynylaryl Aldehyde Oxime Derivatives
作者:Hongyin Gao、Junliang Zhang
DOI:10.1002/adsc.200800568
日期:2009.1
A dramatic substituent effect was found in the silver(I)-catalyzed cyclization reaction of ortho-alkynylaryl aldehyde oximederivatives. When R is an alkyl group, the Ag(I)-catalyzed reaction in dimethylacetamide at 110 °C (conditions A) affords isoquinolines in good to excellent yields, in contrast, isoquinolin-1(2 H)-ones were produced in moderate to high yields under conditions B (dimethylformamide
A convenient method for the synthesis of [3]-cumulenes based on a Horner-Emmons type reaction of allenyldiphenylphosphine oxides with aldehydes or ketones has been described. A facile two-step synthesis of eneynecumulenes has been accomplished by this method.