Intramolecularly coordinated arylmagnesium compounds: effects on the Schlenk equilibrium

Pincer Complexes of Lithium, Sodium, Magnesium and Related Metals: A Discussion of Solution and Solid-State Aggregated Structure and Reactivity

“…Bickelhaupt's group has studied the magnesium coordination chemistry of a formally bis-anionic [ 2 reveals an unusual five-coordinate ligand environment around the Mg atom [129].…”

Reactivity of intramolecularly coordinated aluminum compounds to R3EOH (E = Sn, Si). Remarkable migration of N,C,N and O,C,O pincer ligands

“…The compounds 2,6-(CH 3 OCH 2 ) 2 C 6 H 3 Br [11], 1,3-[(CH 3 ) 2 NCH 2 ] 2 C 6 H 4 [12] and 2 [13] were prepared according to literature procedures.…”

“…Similar to procedure to 2.5.1: 2 (0.75 g, 1.91 mmol); ( n Bu 3 Sn) 2 O (1.14 g, 1.91 mmol) yielded mixture of ( n Bu 3 Sn) 2 O, n Bu 3 Sn i Bu and 2,6-( t BuOCH 2 ) 2 C 6 H 3 Sn n Bu 3 (11). 1 H NMR (C 6 D 6 ): 0.95-2.00 (complex pattern: ( n Bu 3 Sn) 2 O, n Bu 3 Sn i Bu and 11-Sn n Bu 3 ), 1.21 (18H, s, (CH 3 ) 3 CO), 4.47 (4H, s, OCH 2 ), 7.25 (1H, m, Ar-H4), 7.50 (2H, d, Ar-H3,5).…”

“…Preparation of 2,6-(MeOCH 2 ) 2 C 6 H 3 Sn n Bu 3 (10) An equimolar amount of n BuLi (1.6 M hexane solution, 1.78 ml, 2.86ḿ mol) was added to a solution of 2,6-(MeOCH 2 ) 2 C 6 H 3 Br (0.7 g, 2.86 mmol) in diethyl ether (30 ml) at À78°C and resulting pale yellow solution was stirred for 2 h. Then it was added dropwise to the solution of n Bu 3 SnCl (0.93 g, 2.86 mmol) in hexane (30 ml) and was stirred for additional 12 2.5.4. Preparation of 2,6-( t BuOCH 2 ) 2 C 6 H 3 Sn n Bu 3 (11) An equimolar amount of n BuLi (1.6 M hexane solution, 2.74 ml, 4.39 mmol) was added to a solution of 1,3-( t BuOCH 2 ) 2 C 6 H 4 (1.1 g, 4.39 mol) hexane (30 ml) and resulting pale yellow solution was stirred for 2 h at room temperature. Then it was added dropwise to the solution of n Bu 3 SnCl (1.43 g, 4.39 mmol) in hexane (30 ml) and was stirred for additional 12 The two equivalents of Ph 3 SiOH (1.26 g, 4.57 mmol) was added in one portion to a solution of 1 (0.7 g, 2.28 mmol) in toluene (50 ml) and resulting pale yellow solution was stirred for additional 12 h at room temperature.…”

Synthesis of 4-(6H-dibenzo[b,e]thiepin-11-ylidene)cyclohexa-2,5-dienone and 4-(6H-dibenzo[b,e]oxepin-11-ylidene)cyclohexa-2,5-dienone

“…Quinone methides are theoretically and synthetically useful compounds [1][2][3][4] and form the basis of many dyes such as phenol red, fluorescein, eosin and the bromocresols. 5 During the course of studies on the reactions of cycloalkyl azides, a supply of the azide 3a was needed.…”