Solvent-controlled direct radical oxyphosphorylation of styrenes mediated by Manganese(III)
作者:Guo-Yu Zhang、Cheng-Kun Li、Da-Peng Li、Run-Sheng Zeng、Adedamola Shoberu、Jian-Ping Zou
DOI:10.1016/j.tet.2016.04.013
日期:2016.6
Direct radical oxyphosphorylation of styrenes with diarylphosphine oxides and dialkylphosphites mediated by Mn(OAc)3 is described. The solvent played a key role in this selective difunctionalization reaction.
Catalytic, Diastereoselective 1,2-Difluorination of Alkenes
作者:Steven M. Banik、Jonathan William Medley、Eric N. Jacobsen
DOI:10.1021/jacs.6b02391
日期:2016.4.20
with all types of substitution patterns. In general, the vicinal difluoride products are produced with high diastereoselectivities. The observed sense of stereoinduction implicates anchimericassistance pathways in reactions of alkenes bearing neighboring Lewis basic functionality.
Synthesis of Cp*CH2PPh2 and its use as a ligand for the nickel-catalysed cross-coupling reaction of alkyl halides with aryl Grignard reagents
作者:Minoru Uemura、Hideki Yorimitsu、Koichiro Oshima
DOI:10.1039/b612173j
日期:——
A new ligand, Cp*CH2PPh2 (Cp* = 1,2,3,4,5-pentamethyl-2,4-cyclopentadienyl), was prepared, and was used as a ligand for nickel-catalysed cross-couplingreaction of alkylhalides with aryl Grignard reagents, which nickel-phosphine complexes had never made possible.
catalytic allylic C-H fluorination reaction using a nucleophilic fluoride source is reported. Under the influence of a Pd/Cr cocatalyst system, simple olefin substrates undergo fluorination with Et3N·3HF in good yields with high branched:linear regioselectivity. The mild conditions and broad scope make this reaction a powerful alternative to established methods for the preparation of allylic fluorides
Engaging Alkenes and Alkynes in Deaminative Alkyl–Alkyl and Alkyl–Vinyl Cross-Couplings of Alkylpyridinium Salts
作者:Kristen M. Baker、Diana Lucas Baca、Shane Plunkett、Mitchell E. Daneker、Mary P. Watson
DOI:10.1021/acs.orglett.9b03899
日期:2019.12.6
An alkyl-alkyl cross-coupling of Katritzky alkylpyridinium salts and organoboranes, formed in situ via hydroboration of alkenes, has been developed. This method utilizes the abundance of both alkyl amine precursors and alkenes to form C(sp3)-C(sp3) bonds. This strategy is also effective with alkynes, enabling a C(sp3)-C(sp2) cross-coupling. Under these mild conditions, a broad range of functional groups