Selective Synthesis of (<i>E</i>)- and (<i>Z</i>)-Allyl Nitriles via Decarboxylative Reactions of Alkynyl Carboxylic Acids with Azobis(alkylcarbonitriles)
作者:Francis Mariaraj Irudayanathan、Sunwoo Lee
DOI:10.1021/acs.orglett.7b00860
日期:2017.5.5
Allyl nitriles were synthesized from the reactions of arylpropiolic acids with azobis(alkylcarbonitriles) (AIBN or ACCN). In the presence of Cu(OAc)2 as a catalyst and pyridine as the solvent, the (E)-stereoisomer was formed as the major product. This transformation shows good tolerance toward alkoxy, halogen, alcohol, amine, ester, and ketone functional groups. When the reaction was conducted with
Copper-catalyzed decarboxylative cross-coupling of cinnamic acids and ACCN via single electron transfer
作者:Bao Gao、Yinjun Xie、Lei Yang、Hanmin Huang
DOI:10.1039/c5ob02677f
日期:——
using ACCN (1,1′-azobis(cyclohexane-1-carbonitrile)) as a cyano source was described. This reaction was amenable to a broad range of substrates and provided the desired β,γ-unsaturated nitriles containing an all-carbon quaternary carbon center in moderate yields with high selectivity via singleelectrontransfer and decarboxylation.
Reversible Structural Transformations of Metal–Organic Frameworks as Artificial Switchable Catalysts for Dynamic Control of Selectively Cyanation Reaction
dissolve–exchange–crystallization behavior, fascinating reversiblestructuraltransformations proceeded between anion framework 1 and neutral 2D stair‐stepping framework [Cu(CPCDC)(4,4′‐bpe)]}n (2; 4,4′‐bpe=4,4′‐vinylenedipyridine). Moreover, frameworks 1 and 2 can act as heterogeneous artificialswitchablecatalysts to selectively promote the direct cyanationreaction of terminal alkynes and azobisisobutyronitrile