Solid and solution state flexibility of sterically congested bis(imino)bipyridine complexes of zinc(<scp>ii</scp>) and nickel(<scp>ii</scp>)
作者:Gerry A. Griffith、Mohamed J. Al-Khatib、Kalpana Patel、Kuldip Singh、Gregory A. Solan
DOI:10.1039/b811309b
日期:——
Two new sterically demanding bis(imino)bipyridine ligands, 6,6'-(2,6-i-Pr(2)C(6)H(3))N=R}(2)C(10)H(6)N(2) (R = H (L1), Me (L2)), have been prepared in high yield by the condensation reaction of 2,6-diisopropylaniline with 6,6'-(O=R)(2)C(10)H(6)N(2) (R = H, Me). Palladium(0)-mediated cross coupling of 2-(Bu(3)Sn)-6-C(Me)OCH(2)CH(2)O}C(5)H(3)N with 2-Br-6-C(Me)OCH(2)CH(2)O}C(5)H(3)N, followed by an
作者:Luka A. Wright、Eric G. Hope、Gregory A. Solan、Warren B. Cross、Kuldip Singh
DOI:10.1039/c5dt00216h
日期:——
2-bromonitrobenzene. The palladium(II) acetate N,N,N-pincer complexes, [2-(C6H4-2′-NH)-6-(CMeNAr)C5H3N}Pd(OAc)] (Ar = 4-i-PrC6H4 (1a), 2,6-i-Pr2C6H3 (1b)), can be prepared by reacting HL1 with Pd(OAc)2 or, in the case of 1a, more conveniently by the template reaction of ketone 2-(C6H4-2′-NH2)-6-(CMeO)C5H3N, Pd(OAc)2 and 4-isopropylaniline; ready conversion of 1 to their chloride analogues, [2-(C6H4-2′-NH
2-(2'-苯胺)-6-亚胺吡啶,2-(C 6 H 4 -2'-NH 2)-6-(CMe NAr)C 5 H 3 N(Ar = 4-i-PrC 6 H 4(H L1a),2,6-i-Pr 2 C 6 H 3(H L1b)),是通过顺序的Stille交叉偶联,脱保护和缩合步骤由6-三丁基锡烷基-2-(2-甲基-1,3-二氧杂戊环-2-基)吡啶和2-溴硝基苯。乙酸钯(II)N,N,N-钳状配合物,[2-(C 6 H4 -2′-NH)-6-(CMeNAr)C 5 H 3 N} Pd(OAc)](Ar = 4-i-PrC 6 H 4( 1a),2,6-i-Pr 2 C 6 H 3( 1b))可以通过使H L1与Pd(OAc) 2反应来制备,或者在1a的情况下,可以更方便地通过酮2-(C 6 H 4 -2'-NH 2)的模板反应来制备-6-(CMeO)C 5 H 3 N,Pd(OAc) 2和4-异