... Tetrahedron Letters. Volume 35, Issue 30, 25 July 1994, Pages 5477–5480. Cover image Cover image. The Stille coupling reaction of aryl triflates with n-tributylallenyl stannane : a general route to arylallenes. ... 6 April 1994, Accepted 27 May 1994, Available online 26 March 2001. Abstract. The palladium-copper co-catalyzed cross-coupling reaction of n-tributylallenyl stannane 1 with aryl triflates provides an efficient route to the corresponding aryl allenes. ...