Decarboxylative Borylation of <i>m</i>CPBA-Activated Aliphatic Acids
作者:Dian Wei、Tu-Ming Liu、Bo Zhou、Bing Han
DOI:10.1021/acs.orglett.9b04218
日期:2020.1.3
A decarboxylative borylation of aliphatic acids for the synthesis of a variety of alkylboronates has been developed by mixing m-chloroperoxybenzoic acid (mCPBA)-activated fatty acids with bis(catecholato)diboron in N,N-dimethylformamide (DMF) at room temperature. A radical chain process is involved in the reaction which initiates from the B-B bond homolysis followed by the radical transfer from the
Synthetic Utility of <i>N</i>-Benzoyloxyamides as an Alternative Precursor of Acylnitrenoids for γ-Lactam Formation
作者:Soohee Huh、Seung Youn Hong、Sukbok Chang
DOI:10.1021/acs.orglett.9b00791
日期:2019.4.19
C–H amidation reaction. Upon Ir catalysis, N-benzoyloxyamides serve as efficient substrates to afford 5-membered amides. Mechanistic studies revealed that the generation of a putative Ir–carbonylnitrenoid via N–O bond cleavage is facilitated by the chelation of countercations. This protocol offers a convenient and step-economic route to γ-lactams starting from the corresponding carboxylicacids.