1.
Org Lett
; 1(3): 507-8, 1999 Aug 12.
Article
in English
| MEDLINE
| ID: mdl-10822590
ABSTRACT
[formula: see text] Reaction of (eta 6-thiepin-1,1-dioxide)tricarbonylchromium(0) with excess terminal alkynes under photoactivation conditions affords novel pentacyclic adducts formally derived from a sequential [6 pi + 2 pi]/[6 pi + 2 pi]/[2 sigma + 2 pi] cycloaddition process.