Polyfunctional benzylic zinc chlorides by the direct insertion of magnesium into benzylic chlorides in the presence of LiCl and ZnCl2
作者:Albrecht Metzger、Fabian M. Piller、Paul Knochel
DOI:10.1039/b812396a
日期:——
Benzylic zinc chlorides bearing various functional groups are smoothly prepared by the directinsertion of magnesium into benzylic chlorides in the presence of LiCl and ZnCl(2).
Iron-Catalyzed Acylation of Polyfunctionalized Aryl- and Benzylzinc Halides with Acid Chlorides
作者:Andreas D. Benischke、Marcel Leroux、Irina Knoll、Paul Knochel
DOI:10.1021/acs.orglett.6b01677
日期:2016.8.5
FeCl2 (5 mol %) catalyzes a smooth and convenient acylation of functionalized arylzinc halides at 50 °C (2–4 h) and benzylic zinc chlorides at 25 °C (0.5–4 h) with a variety of acidchlorides leading to polyfunctionalized diaryl and aryl heteroaryl ketones.
Functionalized benzylic manganese chlorides were smoothly prepared by the directinsertion of magnesium into benzylic chlorides in the presence of MnCl2·2LiCl. Reactions with acid chlorides, aldehydes, an allyl bromide, and an enone proceed without any additional transition metal.