Asymmetric Organocatalytic 1,6-Conjugate Addition of para-Quinone Methides Using [1,2]-Phospha-Brook Rearrangement.
J Org Chem
; 88(13): 9332-9342, 2023 Jul 07.
Article
in En
| MEDLINE
| ID: mdl-37347936
ABSTRACT
Pudovik addition/[1,2]-phospha-Brook rearrangement as an efficient tool for generation of anionic nucleophiles is an attractive strategy for the construction of C-C bonds in organic synthesis. Herein, we report organocatalytic 1,6-conjugate addition of para-quinone methides utilizing Pudovik addition/[1,2]-phospha-Brook rearrangement. Chiral guanidine-sulfonamide catalyzed the three-component reaction efficiently, providing biologically active oxindole/biaryl/phosphorus-based structures in high yields with excellent diastereo- and enantioselectivities. A possible bifunctional catalytic mode was proposed to elucidate the chiral control of this process.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Benzoquinones
Language:
En
Journal:
J Org Chem
Year:
2023
Type:
Article
Affiliation country:
China