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。
Synthesis of Polysubstituted Olefins by Pd-Catalyzed Cross-Coupling Reaction of Tosylhydrazones and Aryl Nonaflates
are employed as electrophiles in the Pd-catalyzed cross-coupling with tosylhydrazones affording di-, tri-, and tetrasubstituted olefins. Fine tunning of the reaction conditions are required to accomplish the coupling successfully, including the addition of LiCl and the presence of small amounts of water. Under the optimized conditions, the reactions proceed with high yield and also high stereoselectivity