Reactions of asymmetrically substituted o-quinones: 3,5-di-tert-butyl-1,2-benzoquinone with triphenyl-phosphine, -arsine, -stibine, their oxides and trialkyl phosphates
The entitled quinone 4 reacts with triphenylphosphine (3a) and triphenylarsine (3b) to give the cyclic products 12a and 12b, respectively. The same quinone reacts with triphenylstibine (3c) to yield the stibine-methylene 17. The reaction of oxides of 3a-c (5a-c) and trialkyl phosphates 6a-c with the same quinone 4 affords hydrogen bonded complexes 13a-c and o-quinol monophosphates 23a-c, respectively. In both cases compound 22 is the other product. Possible reaction mechanisms are proposed to explain the formation of the new adducts.
Abdou, Wafaa M.,Elkhoshneih, Yehia O.,Kamel, Azza A.
Studies of the Oxidation of Elemental Phosphorus by Substituted ortho-Benzoquinones
The phosphorus compounds P(O2C6R)2Br (R = Cl4, Br4 or Bu2H2) have been prepared by the reaction of P4, Br2 and the substituted o-benzoquinone RC6O2-o.There is no reaction between Bu2H2C6O2-o, P4 and Ph2Se2, but in the presence of catalytic quantities of B
Annan, Theodore A.,Tian, Zhigang,Tuck, Dennis G.
p. 19 - 22
(2007/10/02)
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