Activation of bis-o-phenylene tetrasulfide to render it a practical benzodithiete equivalent for [4+2] cycloadditions with alkenes has been achieved with catalytic amounts of Mo(tfd)2(bdt) (tfd = S2C2(CF3)2; bdt = S2C6H4). Substituted 2,3-dihydro-1,4-benzodithiins are produced.
已成功通过催化量的Mo(tfd)2(bdt)(其中tfd = S2C2(
CF3)2;bdt = S2
C6H4)活化双-邻苯撑四
硫化物,使其成为与烯烃进行[4+2]环加成反应的实用苯并二
硫烯等效物,生成取代的2,3-二氢-1,4-苯并二
硫因。