Fluorine-containing 1,1-dicyanoethylenes: their preparation, diels-alder reactions, and derived norbornenes and norbornanes
作者:W.J Middleton、E.M Bingham
DOI:10.1016/s0022-1139(00)82232-0
日期:1982.5
known (CF3)2CC(CN)2, ClHCC(CN)2, and Cl2CC(CN)2, gave dicyanonorbornenes. Addition of chlorine, bromine, or hydrogen to the norbornenes gave norbornanes. Many of these compounds are exceptionally toxic. For example, 2,2-dicyano-5,6-dichloro-3,3-bis(trifluoromethyl)norbornane has an approximate lethal dose for rats of only 0.2 mg/kg, indicating it to be one of the most potent synthetic oral toxins known
通过氟代羰基化合物与丙二腈的缩合,可在两个或多个步骤中制备数种新的1,1-二氰基乙烯,它们是有效的亲二烯体。这些包括(NC)2 CC(CL)R ˚F(R ˚F是CF 3,C 2 ˚F 5,和C 3 ˚F 7)从全氟羧酸酯,KCH(CN)得到的2和PCL 5,和CF 3来自CF 3 COCF 2 Cl和丙二腈的(CF 2 Cl)CC(CN)2。环戊二烯与这些新的双亲物以及已知的(CF 3)2 CC(CN)2,ClHCC(CN)2,和Cl 2 CC(CN)2,得到dicyanonorbornenes。向降冰片烯中添加氯,溴或氢可得到降冰片烷。这些化合物中有许多具有极高的毒性。例如,2,2-二氰基-5,6-二氯-3,3-双(三氟甲基)降冰片烷对大鼠的致死剂量仅为0.2 mg / kg,表明它是最有效的合成口服毒素之一众所周知。