Synthesis of Alkynylmethylidene-benzoxasiloles through a Rhodium-Catalyzed Cycloisomerization Involving 1,2-Silicon and 1,3-Carbon Migration.
Angew Chem Int Ed Engl
; 56(11): 3004-3008, 2017 03 06.
Article
in En
| MEDLINE
| ID: mdl-28157262
ABSTRACT
It is shown that a cationic rhodium(I)/biphep complex catalyzes the cycloisomerization of 2-(alkynylsilylethynyl)phenols, leading to alkynylmethylidene-benzoxasiloles through concomitant silicon and carbon migration. This unprecedented cycloisomerization presumably proceeds via the formation of rhodium vinylidenes through 1,2-silicon migration, followed by 1,3-carbon (alkyne) migration via the formation of hypervalent silicon centers.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Language:
En
Journal:
Angew Chem Int Ed Engl
Year:
2017
Document type:
Article