Compound 2z
((5',5''-dimethyl-[1,1':3',1'':3'',1'''-quaterphenyl]-4',6''-diyl)bis(oxy))bis(diisopropylphosphane)
From: Catalytic activation of unstrained C(aryl)–C(aryl) bonds in 2,2′-biphenols
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Compound data: 1H NMR
Compound data: 13C NMR
Compound data: 31P NMR
Compound data: Crystallographic data
Synthetic procedure: See article for the definitive version of this procedure and for full experimental details.
Phosphinite 2z was synthesised following the general procedure outlined for compound 2a. White solid (42% yield), m.p. 180 – 182 oC. 1H NMR 1H NMR (500 MHz, C6D6) δ 7.61 (d, J = 2.0 Hz, 2H), 7.56 (dd, J = 7.3, 0.8 Hz, 4H), 7.41 (d, J = 2.0 Hz, 2H), 7.24 (t, J = 7.5 Hz, 4H), 7.17 – 7.11 (m, 2H), 2.57 (s, 6H), 1.79 – 1.68 (m, 2H), 1.39 – 1.35 (m, 2H), 1.11 (dd, J = 10.5, 7.0 Hz, 6H), 1.03 (dd, J = 14.0, 7.5 Hz, 6H), 0.95 (dd, J = 13.0, 7.0 Hz, 6H), 0.74 (dd, J = 12.0, 7.5 Hz, 6H). 13C NMR (126 MHz, CD2Cl2) δ 154.1, 141.2, 135.1, 133.1, 130.3, 129.5, 129.1, 129.0, 127.1, 127.1, 28.9 (d, J = 22.0 Hz), 28.7 (d, J = 24.6 Hz), 18.7 (d, J = 8.3 Hz), 18.1 (d, J = 4.0 Hz), 18.0 (d, J = 4.5 Hz) 17.3 (d, J = 10.6 Hz), 16.9 (d, J = 13.1 Hz); 31P NMR (202 MHz, C6D6) δ 158.95. IR (film, cm-1) 2974, 2954, 2921, 2863, 1602, 1468, 1252, 1218, 1196, 1138, 1076.
