Cobaltate(1‐), Bis[ N ‐[[3,5‐bis(1,1‐Dimethylethyl)‐2‐(Hydroxy‐κO)phenyl]methylene]‐3‐Methyl‐ l ‐Valinato(2‐)‐κN,κO]‐, Sodium

image [ 1820961‐26‐9 ] C 38 H 54 CoN 2 O 6 (MW 749.39) InChi = 1S/2C21H33NO3.Co.Na/c2*1‐19(2,3)14‐10‐13(16(23)15(11‐14)20(4,5)6)12‐22‐17(18(24)25)21(7,8)9;;/h2*10‐12,17,23H,1‐9H3,(H,24,25);;/q;;+3;+1/p‐4/t2*17‐;;/m11../s1 InChiKey = AVBGAHQLODSOHJ‐ASWWNZGLSA‐J Alternate Name : none. Physical Data : mp >300 °C, [α] D 20 = −3304.1 ( c = 0.0148 in MeOH). Solubility : soluble in common organic solvents such as chloroform, toluene, THF, ethyl acetate. Analysis of Reagent Purity : 1 H‐NMR (d 6 ‐acetone, 400 MHz) δ (ppm): 8.41 (s, 2 H ), 7.13 (d, J = 2.6 Hz, 2 H ), 6.99 (d, J = 2.6 Hz, 2 H ), 4.33 (s, 1 H ), 1.25 (s, 18 H ), 1.20 (s, 18 H ), 0.98 (s, 18 H ); 13 C‐NMR (d 6 ‐acetone, 100 MHz) δ (ppm): 182.2, 163.1, 141.6, 134.2, 129.0, 128.1, 119.0, 81.7, 37.2, 35.6, 34.1, 31.9, 30.1, 28.9; [α] D 20 = −3304.1 ( c = 0.01 48 in MeOH); HRMS (ESI) calculated for C 42 H 62 CoN 2 O 6 [M‐Na] − : 749.3934, found 750.3927. Preparative Methods : in a 50 mL round‐bottom flask, 3,5‐di‐ tert ‐butyl‐2‐hydroxybenzaldehyde (5 mmol), l ‐ tert ‐leucine (5 mmol), and Na 2 CO 3 (2.5 mmol) were dissolved in EtOH (25 mL). The reaction mixture was heated at 90 °C for 6 h until becoming homogeneous, followed by the addition of Co(NO 3 ) 2 ·6H 2 O (2.7 mmol). After refluxing for 42 h, the mixture was filtered. The filtrate was concentrated in vacuo, and the residue was purified by column chromatography on neutral Al 2 O 3 to afford anionic stereogenic‐at‐cobalt(III) complex 1 (eq 1). image Form Supplied in : deep red solid. Handling, Storage, and Precautions : the compound is stable and does not require special storage and handling.