Kerrigan, Nessan J. published the artcileStudies in the preparation of novel P-chirogenic binaphthyl monophosphanes (MOPs), Recommanded Product: (R)-[1,1′-Binaphthalene]-2,2′-diyl bis(trifluoromethanesulfonate), the publication is Tetrahedron Letters (2003), 44(46), 8461-8465, database is CAplus.
Several routes to P-chirogenic binaphthyl monophosphines (MOPs) and their derivatives were investigated. Palladium catalyzed coupling of (R)-1,1′-binaphthyl-2,2′-ditriflate with R1R2P(O)H in the presence of base gave 2′-(R1R2-phosphinyl)-1,1-binaphthyl-2-triflate diastereomers (8a,b; R1 = tBu, R2 = Ph; 9a,b; R1 = Ph, R2 = 2-MeOC6H4). Phosphine oxides 8a and 8b were hydrolyzed, methylated and reduced by Si2Cl6 to give corresponding diastereomeric 2-methoxy-2′-methylphenylphosphino-1,1′-binaphthyls (12a,b). The absolute configuration of obtained chiral MOPs was established by x-ray crystallog. Substituents on phosphorus strongly influence the efficiency of the P-C coupling reaction, which is only slightly stereoselective.
Tetrahedron Letters published new progress about 126613-06-7. 126613-06-7 belongs to esters-buliding-blocks, auxiliary class Chiral Diphenols, name is (R)-[1,1′-Binaphthalene]-2,2′-diyl bis(trifluoromethanesulfonate), and the molecular formula is C22H12F6O6S2, Recommanded Product: (R)-[1,1′-Binaphthalene]-2,2′-diyl bis(trifluoromethanesulfonate).
Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics