A number of chloro-, methyl- and methoxy-substituted azobenzenes have been reduced to the corresponding hydrazines by using an aqueous solution of Na2S2O4. The yield is generally excellent, but two compounds, viz. 4,4-dimethoxyazobenzene and 2,2,4,4,6,6-hexamethylazobenzene, gave no hydrazine at all.
Reformed polysilazane and method of producing same
申请人:TOA NENRYO KOGYO KABUSHIKI KAISHA
公开号:EP0304239A1
公开(公告)日:1989-02-22
A novel, reformed polysilazane obtained by reacting a polysilazane with a compound selected from ammonia, primary and secondary amines, hydrazine and mono-, di- and tri-substituted hydrazines to cross-link the polysilazane with the compound serving as a cross-linking agent or to link the compound to the polysilazane.
The Benzidine Rearrangement. Kinetics and Temperature Coefficients of the Rearrangements of Hydrazobenzene and Certain Substituted Hydrazobenzenes<sup>1</sup>
作者:Louis J. Croce、Joseph D. Gettler
DOI:10.1021/ja01100a032
日期:1953.2
Bamberger, Chemische Berichte, 1926, vol. 59, p. 423