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Allenylidene synthesis

Figure 5.51 Allenylidene synthesis propynol dehydration [Ru] = RuCI(dppm)2, Ru(PMe3)2Cp, RiXPPhgyHBipzy, RuCI(PCy3)(r -MeC6H4Pr<)... Figure 5.51 Allenylidene synthesis propynol dehydration [Ru] = RuCI(dppm)2, Ru(PMe3)2Cp, RiXPPhgyHBipzy, RuCI(PCy3)(r -MeC6H4Pr<)...
Keywords Ruthenium-carbenes, Ruthenium-allenylidenes, Ring closing metathesis, Natural product synthesis, Fine chemicals. [Pg.46]

Abstract Allenylidene complexes have gained considerable significance in the context of transition-metal carbene chemistry due to their potential applications in organic synthesis. The aim of this chapter is to draw together a general presentation of the most efficient synthetic routes, the main structural features and reactivity patterns, as well as current applications in homogeneous catalysis, of aU-carbon-substituted allenylidenes and related cumulenylidene complexes containing an odd number of carbon atoms. [Pg.151]

Scheme 1 Synthesis of the allenylidene complex 1 from l,l-diphenyl-2-propyn-l-ol... Scheme 1 Synthesis of the allenylidene complex 1 from l,l-diphenyl-2-propyn-l-ol...
Scheme 4 Synthesis of Group 6 allenylidenes from dianions of propargylic alcohols... Scheme 4 Synthesis of Group 6 allenylidenes from dianions of propargylic alcohols...
Scheme 5 Synthesis of manganese allenylidenes 5 from 7i-alkyne complex 4... Scheme 5 Synthesis of manganese allenylidenes 5 from 7i-alkyne complex 4...
Scheme 8 Synthesis of the polystyrene-supported allenylidene complex 19... Scheme 8 Synthesis of the polystyrene-supported allenylidene complex 19...
Scheme 9 Synthesis of allenylidene complexes 20 bearing a tethered arene/NHC ligand... Scheme 9 Synthesis of allenylidene complexes 20 bearing a tethered arene/NHC ligand...
P-P = dppe X- = BlCfiFslv Scheme 10 Synthesis of the bis(allenylidene) complex 26... [Pg.164]

Bmneau C, Dixneuf PH (eds) (2008) Metal vmylidenes and allenylidenes in catalysis from reactivity to applications in synthesis. Wiley, Weinheim... [Pg.209]

Scheme 1 Synthesis of the first amino-allenylidene complexes 2... Scheme 1 Synthesis of the first amino-allenylidene complexes 2...
Scheme 2 Synthesis of amino-allenylidene chromium complexes 5... Scheme 2 Synthesis of amino-allenylidene chromium complexes 5...
Scheme 6 Synthesis of the alkenyl-allenylidene ruthenium complexes 23... Scheme 6 Synthesis of the alkenyl-allenylidene ruthenium complexes 23...
Scheme 7 Synthesis of methoxy-allenylidene iron(II) complex 30... Scheme 7 Synthesis of methoxy-allenylidene iron(II) complex 30...
Scheme 8 Synthesis of the amino-allenylidene complex 32 through a [3,3] Aza-Cope rearrangement... Scheme 8 Synthesis of the amino-allenylidene complex 32 through a [3,3] Aza-Cope rearrangement...
Scheme 9 Synthesis of amino-allenylidene ruthenium(II) complex 38... Scheme 9 Synthesis of amino-allenylidene ruthenium(II) complex 38...
Scheme 10 Synthesis of alkenyl(amino)allenylidene ruthenium(II) complexes 41... Scheme 10 Synthesis of alkenyl(amino)allenylidene ruthenium(II) complexes 41...
Scheme 15 Synthesis of dimethylamino(organyl)allenylidene complexes 53... Scheme 15 Synthesis of dimethylamino(organyl)allenylidene complexes 53...
Going one step beyond, the reaction of these n-donor-substituted Group 6 allenylidenes with bifunctional N,N- or W, 5-dinucleophiles opened up a fruitful route for the synthesis of an extensive family of N- or 5-heterocyclic carbenes. Thus, treatment of complex [Cr =C=C=C(NMe2)Ph (CO)5] with benzamidine, guanidine or thioacetamide has been reported to yield the a,(3-unsaturated carbenes 54 (Scheme 16) [62], arising from nitrogen attack at Cy, subsequent HNMe2... [Pg.236]

R = Ph, OMe. NM62, 0-(-)-menthyl Scheme 17 Synthesis of alkenyl(amino)allenylidenes 60... [Pg.237]

Scheme 19 Synthesis of the trienyl(amino)allenylidene complex 64... Scheme 19 Synthesis of the trienyl(amino)allenylidene complex 64...
Cadiemo V, Gamasa MP, Gimeno J (2001) Eur J Inorg Chem 571-591 Bmneau C, Dixneuf PH (eds) (2008) Metal vinylidenes and allenylidenes in catalysis from reactivity to applications in synthesis. Wiley, Weinheim Cadiemo V, Gimeno J (2009) Chem Rev 109 3512-3560... [Pg.250]

See other pages where Allenylidene synthesis is mentioned: [Pg.232]    [Pg.199]    [Pg.204]    [Pg.34]    [Pg.346]    [Pg.46]    [Pg.47]    [Pg.75]    [Pg.135]    [Pg.140]    [Pg.153]    [Pg.156]    [Pg.159]    [Pg.159]    [Pg.160]    [Pg.161]    [Pg.168]    [Pg.208]    [Pg.208]    [Pg.222]    [Pg.226]    [Pg.226]    [Pg.228]    [Pg.232]    [Pg.61]    [Pg.65]    [Pg.67]   
See also in sourсe #XX -- [ Pg.62 ]



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