Solvent for Markovnikoff HX addition to alkenes Br 2 + alkene  halohydrin Cold KMnO 4 makes what kind of diol ? Bits and Pieces Alkene Drill ether Wet.

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Presentation transcript:

Solvent for Markovnikoff HX addition to alkenes Br 2 + alkene  halohydrin Cold KMnO 4 makes what kind of diol ? Bits and Pieces Alkene Drill ether Wet CCl 4 Syn diol CHCl 3 OsO 4 + alkenes makes… Syn diol

Reagents for 1-step anti diol from alkenes? Order of reagent addition in industrial synthesis of ethanol from ethene ? 1 st then Name of two alternative routes inserting CH 2 into ethene to make HCOOH (formic acid) and HOOH (hydrogen peroxide) 1) Carbene insertion with diazomethane 2) Simmons-Smith insertion with CH 2 I 2 +Zn(Cu) O3O3 Bits and pieces (continued) H 2 SO 4 ( conc) H2OH2O

Key reagent causing polymerization of alkenes ? Bits and pieces (continued) Peroxides Key reagent causing anti-Markovnikoff addition of HX across alkenes ? Peroxides First reagent added in Brown 2-step Anti- Markovnikoff synthesis of ROH from alkenes B 2 H 6 (BH 3 ) Solvent for above reaction? THF (tetrahydrofuran) Second set of reagent(s) added for above reaction ? Peroxide (HOOH) in OH- (base)

Bits and pieces (continued) Key catalyst needed for H 2 + alkene  alkane Pt or Pd First reagent added in Brown 2-step Markovnikoff synthesis of ROH from alkenes (cancer!) Hg(C 2 H 3 O 2 ) 2 Second reagent added in Brown 2-step Markovnikoff synthesis of ROH from alkenes NaBH 4 in OH - Anti-hydroxylation Reaction Order thento Then finally add to Cl 2 in wet CCl 4 NaOH /H 2 O H+H+

“ I is already exhausted and class is not even half over…”