Ni-catalyzed deaminative cross-electrophile coupling of Katritzky salts with halides via C─N bond activation.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 31259244.
- Also identified by DOI 10.1126/sciadv.aaw9516 and PMC identifier 6598763.
- Licence recorded as CC BY-NC.
- Because redistribution is not established, this page shows the abstract only. Follow the links below for the full text.
Abstract
The reductive cross-coupling of sp<sup>3</sup>-hybridized carbon centers represents great synthetic values and insurmountable challenges. In this work, we report a nickel-catalyzed deaminative cross-electrophile coupling reaction to construct C(sp)─C(sp<sup>3</sup>), C(sp<sup>2</sup>)─C(sp<sup>3</sup>), and C(sp<sup>3</sup>)─C(sp<sup>3</sup>) bonds. A wide range of coupling partners including aryl iodides, bromoalkynes, or alkyl bromides are stitched with alkylpyridinium salts that derived from the corresponding primary amines. The advantages of this methodology are showcased in the two-step synthesis of the key lactonic moiety of (+)-compactin and (+)-mevinolin. The one-pot procedure without isolation of alkylpyridinium tetrafluoroborate salt is also proven to be successful. This cross-coupling strategy of two electrophiles provides a highly valuable vista for the convenient installation of alkyl substituents and late functionalizations of sp<sup>3</sup> carbons.