The Substitution of Aryl Iodides with Cuprous Acetylides. A Synthesis of Tolanes and Heterocyclics R. D. Stephens and C. E. Castro Journal of Organic Chemistry; 1963; 28(12); pp 3313–15; doi:10.1021/jo01047a008
orgsynth.org
D. C. Owsley and C. E. Castro.Organic Syntheses, Coll. Vol. 6, p.916 (1988); Vol. 52, p.128 (1972) Link.
