racemic-8,8'-Bis(diphenylphosphino)-3,3',4,4'-tetrahydro-4,4,4',4',6,6'-hexamethyl-2,2'-spirobi[2H-1-benzopyran], min. 95% SPANphos|15-5165|556797-94-5

racemic-8,8'-Bis(diphenylphosphino)-3,3',4,4'-tetrahydro-4,4,4',4',6,6'-hexamethyl-2,2'-spirobi[2H-1-benzopyran], min. 95% SPANphos

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Product Information

Product Name
racemic-8,8'-Bis(diphenylphosphino)-3,3',4,4'-tetrahydro-4,4,4',4',6,6'-hexamethyl-2,2'-spirobi2H-1-benzopyran, min. 95% SPANphos
Brand Name
US-Strem
Product Number
15-5165
CAS
556797-94-5
Certificate of Analysis (COA)​
COA not found

General Information

PubChem CID
12103420
IUPAC Name
(8'-diphenylphosphanyl-4,4,4',4',6,6'-hexamethyl-2,2'-spirobi3H-chromene-8-yl)-diphenylphosphane
InChI Key
RQMTZMWXNZQOPD-UHFFFAOYSA-N
SMILES
CC1=CC2=C(C(=C1)P(C3=CC=CC=C3)C4=CC=CC=C4)OC5(CC2(C)C)CC(C6=C(O5)C(=CC(=C6)C)P(C7=CC=CC=C7)C8=CC=CC=C8)(C)C

Application

Technical Note:
1.A binucleating diphosphine ligand used as a trans-spanning ligand which rigidly links mutually trans coordination sites via e.g. inMCl,(SPANphos) (M= Pa, Pt), Rhs(u-CI)2(CO)(SPANphos), the latter usefui in, for example, the homogeneous catalyti ; carbonylation of methanol to acetic acid.
References:
1. Angew chem Int Ed..2003 42 1284