Zhang, Jitan published the artcilePd(
Herein, the first Pd(II)-catalyzed atroposelective dual C-H annulative strategy for the assembly of axially chiral aldehyde frameworks such as I [R = Me, Et, i-Pr] using com. available amino acid as the transient auxiliary and chiral pool was presented. This reaction accommodated a broad substrate scope to give atropisomeric aldehydes bearing both C-C and N-C chiral axes in good yields (up to 95%) with excellent enantioinduction (up to 99%). The utility of this synthetic methodol. was testified by various practical late-stage transformations, thereby accomplishing diversity-oriented synthesis of structurally diverse biaryl atropisomers and several functionalized axially chiral species such as bifunctional organocatalysts. Moreover, a series of mechanistic studies had provided more details for this catalytic transformation.
Organic Chemistry Frontiers published new progress about 220943-23-7. 220943-23-7 belongs to indole-building-block, auxiliary class Indole,Fluoride,Aldehyde, name is 5-Fluoro-1H-indole-2-carbaldehyde, and the molecular formula is C20H17FO4S, Computed Properties of 220943-23-7.
Referemce:
https://www.nature.com/articles/s41429-020-0333-2,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles