Bisphosphanes, chiral

Chiral Bisphosphane Ligands through Modifications of DuPhos and BPE... 

Figure 5 Chiral bisphosphane ligands on the modification of DIOP.

Figure 6 Chiral ferrocene-based bisphosphane ligands.

Some other efficient chiral bisphosphane ligands have been listed in Figure 8. Those include Achiwa s BPPM,125 and a series of modified BPPM ligands such as BCPM and MOD-BPPM 126,126a 126j some excellent chiral... 

This chapter describes atropisomeric biaryl bisphosphine ligands modified DIOP-type ligands P-chiral bisphosphane ligands other bisphosphane ligands and their applications in the enantioselective hydrogenation of olefins. 

Fig. 26.4 Chiral bisphosphane ligands based on DIOP modifications.

Chiral Bisphosphane Ligands Based on the Modification of DIOP... 

Recently, many effective chiral bisphosphane hgands with a ferrocene backbone have been developed (Scheme 1.4). Ito has successfully developed a series of traits-chelating bisphosphane hgands, TRAPs, which are highly selective for rhodium-catalyzed asymmetric hydrogenation [46]. 

S,4S)-N-tert-butoxycarbonyl-4-diphenylphosphino-2-diphenylphosphino-methyl-pyrrolidine (BPPM) (13) is an excellent bisphosphane and is also the starting material for the synthesis of PPM (14). The chiral bisphosphanes (15) have been prepared by reaction of (14) with either acid chlorides or isocyanates. 

Bis(phoshacyclopentadienyl)titanium(II) complexes, preparation and reactivity, 4, 265 Bisphosphanes on DIOP modification, 10, 7 in hydrogenations, 10, 7 in hydrogenations, P-chiral ligands, 10, 11 Bisphosphinidenes, with platinum(II), 8, 453 -54 Bisphosphinites, in hydrogenations, 10, 14 Bis(phosphinoalkyl-thioether)arenes, in ruthenium isocyanides, 7, 138... 

BPE, and chiral bisphosphane ligands, 10, 7 (+)-Brasilenyne, via ring-closing diene metathesis, 11, 221 Breast implants, silicone applications, 3, 680 Brevetoxin B, via ring-closing diene metathesis, 11, 237 m -Brevicomin, synthesis, 9, 13... 

C-E bond formation via hydroalumination, 10, 859 C-E bond formation via hydroboration, 10, 842 olefin cross-metathesis, 11, 195 terminal acetylene silylformylation, 11, 478 Chemspeed automated synthesizer, for high-throughput catalyst preparation, 1, 356 Chini complexes, characteristics, 8, 410 Chiral bisphosphanes, in hydrogenations on DIOP modification, 10, 7... 

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