Nair Vijay, Pillai Abhilash N, Beneesh P B, Suresh Eringathodi
Organic Chemistry Division, Regional Research Laboratory (CSIR), Trivandrum-695019, India.
Org Lett. 2005 Oct 13;7(21):4625-8. doi: 10.1021/ol051723w.
[reaction: see text] The pyridine-mediated reaction of dimethyl acetylenedicarboxylate and cyclobutene-1,2-diones affords selective access to either hexasubstituted benzene derivatives or cyclopentenedione derivatives depending on the concentration of pyridine.
[反应:见正文] 二甲基乙炔二羧酸酯与环丁烯-1,2-二酮在吡啶介导下反应,根据吡啶的浓度可选择性地得到六取代苯衍生物或环戊二酮衍生物。