Pd(II)-catalyzed addition of sp2 C–H to nitrile/aerobic oxidation sequences for the preparation of functionalized α-imino ketones is described in which readily available heteroarenes and O-acyl cyanohydrins were employed. Various functionalized targeted molecules can be prepared in good yields with high atom and step economy. Moreover, a broad substrate scope and the ready manipulation and availability
Francis; Davis, Journal of the Chemical Society, 1909, vol. 95, p. 1406
作者:Francis、Davis
DOI:——
日期:——
Synthesis of 2,4,5-Trisubstituted Oxazoles via Pd-Catalyzed C–H Addition to Nitriles/Cyclization Sequences
作者:Di Zhang、Hao Song、Na Cheng、Wei-Wei Liao
DOI:10.1021/acs.orglett.9b00700
日期:2019.4.19
A practical and flexible intermolecular protocol for the diverse synthesis of trisubstituted oxazole derivatives via a Pd-catalyzed direct C–H addition of electronic-rich heteroarenes to O-acyl cyanohydrins bearing an α-hydrogen/cyclization sequence is described. A wide range of trisubstituted oxazoles can be prepared from readily available starting materials in good to high yields with high efficiency
Cyanobenzoylation and Hydrocyanation of Aldehydes with Benzoyl Cyanide Using No Catalyst
作者:Tsutomu Watahiki、Sayoko Ohba、Takeshi Oriyama
DOI:10.1021/ol0348295
日期:2003.7.1
[reaction: see text] In the presence of MS 4A in DMSO, cyanobenzoylation of various aldehydes with benzoylcyanide proceeded very smoothly to give the corresponding cyanohydrin benzoates in high to excellent yields without an acid or a base. On the other hand, reaction of aldehydes with BzCN in DMSO-H(2)O also occurred readily to afford the corresponding free cyanohydrins exclusively.