Solvent and salt effects on the reactions of allyltin (IV) compounds with singlet oxygen, 4-phenyl-1,2,4-triazoline-3,5-dione and diethyl azodicarboxylate
Wj. Kinart et al., Solvent and salt effects on the reactions of allyltin (IV) compounds with singlet oxygen, 4-phenyl-1,2,4-triazoline-3,5-dione and diethyl azodicarboxylate, J ORGMET CH, 608(1-2), 2000, pp. 49-53
The effect of the increase of polarity of the solvent binary mixture methan
ol-benzene on the selectivity and the rate of metalloene reactions of diffe
rent allyltin compounds with singlet oxygen, 4-phenyl-1,2,4-triazoline-3,5-
dione (PTAD) and diethyl azodicarboxylate (DEAD) was studied. Analogous com
parative studies were carried out in Et2O and 4 mol dm(-3) solutions of LiC
lO4 in diethyl ether. In the reaction with PTAD and O-1(2) the more polar s
olvent favoured the production of the M-ene product, whereas the cycloaddit
ion reaction was favoured by a non-polar solvent. (C) 2000 Elsevier Science
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