Contemporaneous Dual Catalysis: Aldol Products from Non‐Carbonyl Substrates
作者:Barry M. Trost、Jacob S. Tracy
DOI:10.1002/chem.201502973
日期:2015.10.19
carbon–carbon bond‐forming reactions vital to modern organic synthesis. Despite the attention this reaction has received, issues related to chemo‐ and regioselectivity as well as reactivity of readily enolizable electrophiles remain. To help overcome these limitations, a new direct approach toward aldol products that does not rely upon carbonyl substrates is described. This approach employs room‐temperature
Carbon–Nitrogen Bond Formation via the Vanadium Oxo Catalyzed Sigmatropic Functionalization of Allenols
作者:Barry M. Trost、Jacob S. Tracy
DOI:10.1021/acs.orglett.7b00961
日期:2017.5.19
electrophilic nitrogen sources is reported even in the presence of competing simple protonation and Alder-ene pathways. Hydrazine products can be cyclized in a 6-endo-trig fashion which, upon reductivecleavage of the N–N bond, yield 1,4-diamines. Additionally, cleavage of the N–N bond before cyclization can be achieved to form β-hydroxy amines, a common structural motif of biologically active compounds.