ESTER HYDRAZONES AS POSSIBLE PRECURSORS TO ALKOXYDIAZOALKANES: I. THE SYNTHESIS OF ESTER (<i>p</i>-TOLYLSULFONYL)HYDRAZONES AND THEIR DECOMPOSITION IN PROTIC SOLVENTS TO GIVE MIXED ACETALS
作者:Robert J. Crawford、Rintje Raap
DOI:10.1139/v65-015
日期:1965.1.1
(p-tolylsulfonyl)hydrazone (I) was prepared from the reaction between (p-tolylsulfony1)hydrazide and either methyl benzimidate hydrochloride or methyl orthobenzoate. When the potassium or sodium salt of this hydrazone was deconlposed, ther~nally or photochemically, in the presence of alcohols, benzaldehyde mixed acetals could be isolated in good yields and of high purity. When the decomposition was carried
Ethers made easy: Heating a solution containing a tosylhydrazone and either a phenol or an alcohol in the presence of K2CO3 leads to the corresponding ethers (see scheme; MW=microwave, Ts=tosyl). The reaction is fairly general for the preparation of aryl alkyl and alkyl alkyl ethers, and represents a new method for the reductive etherification of carbonylcompounds.
醚变得容易:在K 2 CO 3存在下加热含有甲苯磺酰s和苯酚或醇的溶液会生成相应的醚(参见方案; MW =微波,Ts =甲苯磺酰基)。该反应对于制备芳基烷基和烷基烷基醚是相当普遍的,并且代表了一种用于羰基化合物的还原醚化的新方法。
A Convenient Synthesis of Ester p-Tosylhydrazones and Studies of the Thermal Decomposition of Some of Their Sodium Salts<sup>1</sup>