Created by Prathik KP
over 6 years ago
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Question | Answer |
Grooves method | R-OH +HX/anhyd ZnCl2 or Conc H2SO4 ----> RCl + H2O |
Lucas reagent | Mixture of conc. HCl and anhyd ZnCl2 |
Darzens method | R-OH + SOCl2(thionyl chloride) + pyridine ------> RCl + SO2 + HCl |
Alcohol to alkylhalide | 1. HX / anhyd ZnCl2 2. PCl3 / PCl5 3. SOCl2 / pyridine 4. NaBr / H2SO4 5. Red P / X2 X = Br2 / I2 |
Hydrocarbon to alkylhalide | Freeradical halogenation with X2 in light |
alkene to haloalkane | alkenes react eith hydrogen halide to give corresponding haloalkanes |
Toluene to halotoluene | electrophilic substitution X2 in the presence of Fe(lewis acid catalyst) in the absence of light (dark) |
Sandmeyer's reaction | Aniline + freshly prepared ---> Benzene diazonium chloride Benzene diazonium chloridr in the presence of Cu2X2 and HCl to give halobenzene |
Gattermann reaction | Benzene diazonium chloride is heated with copper in HCl to get chlorobenzene with evolution of N2 |
Balz Schiemann | Benzene diazonium chloride is heated with fluoroboric acid to get fluoro benzene with evolution of N2 |
preparation of iodobenzene | Benzene diazonium chloride is heated with aq KI to get iodobenzene along with evolution of N2 |
Raschig's process | chlorobenzene is obtained by heating a mixture of benzene vapours amd hydrogen chloride and air at 300°c in presence of cupric chloride |
Finkelstein reaction | chloro or bromo alkane are geated with sodium iodide in acetone to get iodoalkane |
Swarts reaction | Fluoro alkanes are prepared by action of silver fluoride or mercuroys fluoride on chloroalkanes |
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