Seven diaryl ethers were synthesized with potassium fluoride coated alumina as a strong base and the addition of catalytic amount of PTC. The yield of diaryl ethers with addition of PTC was much higher than that witho...Seven diaryl ethers were synthesized with potassium fluoride coated alumina as a strong base and the addition of catalytic amount of PTC. The yield of diaryl ethers with addition of PTC was much higher than that without PTC.A discussion of the catalysis mechanism was given in this paper.展开更多
Alkyl methyl(ethyl) malonates were synthesized by solidliquid phase transfer catalysis without solvent in the new method of the reaction of potassium methyl(ethyl) malonate with alkyl bromide or chloride with high y...Alkyl methyl(ethyl) malonates were synthesized by solidliquid phase transfer catalysis without solvent in the new method of the reaction of potassium methyl(ethyl) malonate with alkyl bromide or chloride with high yields.Under the microwave irradiation,the reaction time was reduced from 2h to 2min with equal yield.展开更多
Aroyl isothiocyanate is synthesized by the reaction of aroyl chloride with ammoniurrthiocyanate under the condition of solid1iquid phase transfer catalysis using PEG-400 as the catalyst.The tater needs not to be isola...Aroyl isothiocyanate is synthesized by the reaction of aroyl chloride with ammoniurrthiocyanate under the condition of solid1iquid phase transfer catalysis using PEG-400 as the catalyst.The tater needs not to be isolated and is reacted with aromatic amine immediately to give N-aroy 1-N′-aryl thiourea derivatives in high yield.The promoting effects of the title compounds on wheat growth are tested preliminily.展开更多
文摘Seven diaryl ethers were synthesized with potassium fluoride coated alumina as a strong base and the addition of catalytic amount of PTC. The yield of diaryl ethers with addition of PTC was much higher than that without PTC.A discussion of the catalysis mechanism was given in this paper.
文摘Alkyl methyl(ethyl) malonates were synthesized by solidliquid phase transfer catalysis without solvent in the new method of the reaction of potassium methyl(ethyl) malonate with alkyl bromide or chloride with high yields.Under the microwave irradiation,the reaction time was reduced from 2h to 2min with equal yield.
文摘Aroyl isothiocyanate is synthesized by the reaction of aroyl chloride with ammoniurrthiocyanate under the condition of solid1iquid phase transfer catalysis using PEG-400 as the catalyst.The tater needs not to be isolated and is reacted with aromatic amine immediately to give N-aroy 1-N′-aryl thiourea derivatives in high yield.The promoting effects of the title compounds on wheat growth are tested preliminily.
