الفهرس | Only 14 pages are availabe for public view |
Abstract Introduction: Surveying the different application of tetrachlorosilane and its derivatives in the preparation of organic compounds. Results and discussion: Part 1: TetrachlorosilaneSodium Azide Reagent Combination (Triazidochlorosilanein situ): Several tetrazole derivatives have received increased attention due to wide medicinal applications. The reaction of primary thioamides with triazidochlorosilane (generated in situ from TCS and NaN3) in refluxed acetonitrile produces the corresponding 5substituted1Htetrazoles in excellent yields. Part 2: Tetrachlorosilane and UreaHydrogen Peroxide Reagent: We reported herein, as a preliminary investigation, the oxychlorination of <U+F061>,<U+F062>unsaturated carbonyl compounds using a novel reagent system derived from tetrachlorosilane and ureahydrogen peroxide adduct in excellent yields. Part 3: TetrachlorosilaneIsoamylnitrite Reagent Combination: In this part, we examined the gasoximation of arylmethyl ketones. Treatment of acetophenone derivatives 50ae with a mixture of tetrachlorosilane and isoamyl nitrite at 20<U+00BA>C in CH2Cl2 afforded the gasoximino derivative 51ae in excellent yields. Part 4: Tetrachlorosilane (TCS) with dry ethanol combination was found to be a useful reagent for the synthesis of a variety of organic compounds of diverse complexity. In the present work the behavior of benzaldehyde derivatives with the 1,2diphenyl ethanone (deoxybenzoin) derivatives has been studied in the presence of our reagent TCS/EtOH. |