1.
Angew Chem Int Ed Engl
; 37(22): 3136-3139, 1998 Dec 04.
Artigo
em Inglês
| MEDLINE
| ID: mdl-29711316
RESUMO
Formation of polycyclic structures within a few minutes: The intramolecular cyclization of diynes, activated by a benzenesulfenyl substituent, upon reaction with IPy2 BF4 proceeds as an efficient exo-endo coupling. A subsequent novel Friedel-Crafts-like ring closure provides the product [Eq. (1)]. Thus, intra- and intermolecular cyclizations can be carried out.
