نتایج جستجو برای: Activated acetylenic compounds
تعداد نتایج: 441223 فیلتر نتایج به سال:
Three-component Process for the Synthesis of Some Thiophene Derivatives Using Water as a Green Media
A convenient and efficient three-component reaction to a one-pot synthesis of thiophene derivatives from activated acetylenic compounds and ethyl 2chloroacetoacetate in the presence of tetramethyl thiourea in water lead to the formation of thiophenes in good yields.
A novel, convenient and efficient multi-component reaction for synthesis of phosphonate derivatives from activated acetylenic compounds with 2-hydroxyacetophenone in the presence of phosphites in water lead to the formation of phosphonates in good yields.
A new acetylenic acid, (10E,14Z)-9-oxooctadeca-10,14-dien-12-ynoic acid (1), was isolated from the edible mushroom Chanterelle (Cantharellus cibarius), together with a known acetylenic acid, (10E,14Z)-9-hydroxyoctadeca-10,14-dien-12-ynoic acid (2) and their structures were determined through analysis of NMR and mass data. The new acetylenic acid (1) specifically activated peroxisome proliferato...
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