| 词条 | SEGPHOS |
| 释义 |
| Verifiedfields = changed | Watchedfields = changed | verifiedrevid = 428222586 | ImageFile = SEGPHOS.png | ImageAlt = Skeletal formula of SEGPHOS | ImageFile1 = SEGPHOS-3D-spacefill.png | ImageAlt1 = Space-filling model of the SEGPHOS molecule | IUPACName = 4,4′-Bi-1,3-benzodioxole-5,5′-diylbis(diphenylphosphane) | OtherNames = SEGPHOS 5,5′-Bis(diphenylphosphino)-4,4′-bi-1,3-benzodioxole | Section1 = {{Chembox Identifiers | CASNo_Ref = {{cascite|correct|??}} | CASNo = 244261-66-3 | CASNo_Comment = (R) | CASNo2_Ref = {{cascite|changed|??}} | CASNo2 = 210169-54-3 | CASNo2_Comment = (S) | PubChem = 11017510 | PubChem_Comment = (RS) | ChemSpiderID_Ref = {{chemspidercite|changed|chemspider}} | ChemSpiderID = 9192694 | ChemSpiderID_Comment = (RS) | SMILES = C1OC2=C(O1)C(=C(C=C2)P(C3=CC=CC=C3)C4=CC=CC=C4)C5=C(C=CC6=C5OCO6)P(C7=CC=CC=C7)C8=CC=CC=C8 | SMILES_Comment = (RS) | StdInChI_Ref = {{stdinchicite|changed|chemspider}} | StdInChI = 1S/C38H28O4P2/c1-5-13-27(14-6-1)43(28-15-7-2-8-16-28)33-23-21-31-37(41-25-39-31)35(33)36-34(24-22-32-38(36)42-26-40-32)44(29-17-9-3-10-18-29)30-19-11-4-12-20-30/h1-24H,25-26H2 | StdInChI_Comment = (RS) | StdInChIKey_Ref = {{stdinchicite|changed|chemspider}} | StdInChIKey = RZZDRSHFIVOQAF-UHFFFAOYSA-N | Section2 = {{Chembox Properties | Formula = C38H28O4P2 | MolarMass = 610.57 g/mol | Appearance = colorless solid | Density = | MeltingPt = | BoilingPt = | Solubility = organic solvents | Section3 = {{Chembox Hazards | MainHazards = | FlashPt = | AutoignitionPt = }} SEGPHOS is a chiral ligand developed by Takasago that is used in asymmetric synthesis.[1] It was developed after BINAP and was investigated since it has a narrower dihedral angle between the aromatic faces. This was predicted and then confirmed to increase the enantioselectivity and activity of metal complexes of SEGPHOS. After its commercialization, SEGPHOS and its substituted derivatives have been found to constitute a privileged ligand class for a variety of transition metal catalysts and chemical transformations beyond its original application in ruthenium-catalyzed enantioselective hydrogenation. In addition to the parent ligand bearing phenyl groups on the phosphorus atoms, the bulkier derivatives DM-SEGPHOS and DTBM-SEGPHOS are also commercially available.[2] In DM-SEGPHOS and DTBM-SEGPHOS, the phenyl groups of SEGPHOS are replaced by 3,5-dimethylphenyl and 3,5-di-tert-butyl-4-methoxyphenyl groups, respectively. References1. ^{{cite journal | author = Shimizu, H., Nagasaki, I., Matsumura, K., Sayo, N., Saito, T. | title = Developments in Asymmetric Hydrogenation from an Industrial Perspective | year = 2007 | journal = Acc. Chem. Res. | volume = 40 | issue = 12| pages = 1385–1393 | doi = 10.1021/ar700101x | pmid = 17685581 }} 2. ^{{Cite web|url=http://www.strem.com/catalog/family/SEGPHOS/|title=SEGPHOS|website=www.strem.com|access-date=2016-08-10}} 2 : Bisphosphanes|Named phosphines |
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