104499-04-9Relevant articles and documents
An Unexpected Double Cycloaddition of Triazolopyrimidine N-Ylide with Activated Acetylenes and Alkenes
Hori, Mikio,Kataoka, Tadashi,Shimizu, Hiroshi,Imai, Eiji,Tanaka, Kiyomi,et al.
, p. 2531 - 2538 (2007/10/02)
The reaction of 5,7-dimethyl-triazolopyrimidinio-3-phenacylide (5) with activated acetylenes gave 1 : 2 adducts of ylide-R-CC-R.The structures of the products were determined as 3,3a-dihydropyrazolopyrimidine derivatives (7) by hyd