Titanium and Zirconium in Organic Synthesis by Ilan Marek, Victor Snieckus

By Ilan Marek, Victor Snieckus

Over the past years, the position of titanium and zirconium in natural synthesis has dramatically elevated andnowadays, no man made chemist can come up with the money for to be with no sound wisdom of this interesting organometal chemistry.This distinctive ebook, edited through Ilan Marek, hence summarizes the varied functions anddevelopments of those crew four early transition steel complexes.A plethora of across the world popular specialists and prime scientists during this box disguise all of the major features of this more and more importantpart of natural chemistry and convey the reader as much as date.A really beautiful and precious function is the inclusion of commonplace experimental methods, selected for large software and application.This finished demonstrates the range and the purposes of those very important compounds and is a must have for all chemists operating in organometallic or artificial natural chemistry.

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NiLn or PdLn R [10, 102] X H H ArI 2 cat. PdLn, ZnCl2 R H [12] Ar X R H R1 H cat. PdLn R H ZrCp2Cl [11, 102] H H H R1 H X R2 R1 R3 ZrCp2Cl cat. PdLn, ZnCl2 [103] R3 Ar R2 R1 R3 [12] X R1 cat. PdLn, ZnCl2 R H cat. 23. Pd- or Ni-catalyzed cross-coupling reactions of alkenylzirconium derivatives by Zr-to-Pd (or Ni) transmetallation. R H Me Ar R ArX cat. NiLn or PdLn, ZnX2 R1ZnX(MgX) cat. NiLn or PdLn [12] X [107] H RC cat. PdLn, ZnX2 Me [12] X H R cat. PdLn R Me H R Ar Me R Me H COR1 Me [103] X Ar cat.

70 to 0 oC H H Addition of allylzirconocene derivatives to aldehydes. 28. R EtO RCHO Lewis acid [118] OH OH RCHO R H+ [117] OEt R O OH OEt OEt Addition of g,g-bis(ethoxy)allylzirconocene derivatives to aldehydes. 1. R3CN R1 R1R2CO ZrCp2 R ZrCp2 R2 O OH 2. H+ O H+ ZrCp2 R2 R1 OH R2 OR1 O RCOOR1 R1 R H+ R O RCN ZrCp2 R N H+ R ZrCp2 O 1. R1COR2 2. 29. R1 R R2 O HO Addition of 1,3-dienezirconocene complexes to carbonyl compounds and nitriles. 30. + Me R2 C C C R Me No reaction Reactions of a-titana- or a-zirconaorganoalanes with carbonyl compounds.

15. 16. O Synthesis of other three-membered zirconacycles. Cp2ZrCl2 PhC Cp2Zr [49] O SiMe2Ph Cp2Zr Me PhMe2SiLi Cl Ph SiMePh Ph Si Cp2Zr PhMe2Si D2O Ph D D CH2 H Me Si Ph Cp2Zr CH2 Ph SiMePh Synthesis of zirconasilacycles by b-H abstraction. 14). No alkenes or alkynes are used as temporary ligands in this protocol. Unless hydrozirconation is used to generate the initial organylzirconocene derivatives, even final alkene or alkyne ligands are not usually derived from the corresponding p-compounds.

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Titanium and Zirconium in Organic Synthesis by Ilan Marek, Victor Snieckus
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