设计了用于金属介导的碱基对的基于腙的新核苷家族。人工核碱基是 papy 配体的衍生物(papy = pyridinecarboxaldehyde-2'-pyridylhydrazone)。通过分别用呋喃和噻吩替换纸糊中的侧基吡啶部分,获得了具有 N, N, N-, N, N, O- 和 N, N, S-供体位点的三齿核苷。由于仅报道了少数具有悬垂呋喃配体的过渡金属配合物,因此合成了 N、N、O 供体核苷的模型核碱基。报道了其 Cu2+、Ni2+ 和 Co2+ 配合物的分子结构。在所有配合物中,仅观察到弱的 M-O(呋喃) 键合。Co2+ 复合体显示出五边形双锥体配位排列。一般来说,
DOI:
10.1002/zaac.201300061
作为产物:
描述:
2-乙酰基噻吩 、 2-肼吡啶 在
溶剂黄146 作用下,
以
乙醇 为溶剂,
反应 1.17h,
以50%的产率得到hydrazon obtained by condensation of 2-pyridylhydrazine with 2-acetylthiophene
参考文献:
名称:
用于金属介导的碱基对的一系列腙基核苷
摘要:
设计了用于金属介导的碱基对的基于腙的新核苷家族。人工核碱基是 papy 配体的衍生物(papy = pyridinecarboxaldehyde-2'-pyridylhydrazone)。通过分别用呋喃和噻吩替换纸糊中的侧基吡啶部分,获得了具有 N, N, N-, N, N, O- 和 N, N, S-供体位点的三齿核苷。由于仅报道了少数具有悬垂呋喃配体的过渡金属配合物,因此合成了 N、N、O 供体核苷的模型核碱基。报道了其 Cu2+、Ni2+ 和 Co2+ 配合物的分子结构。在所有配合物中,仅观察到弱的 M-O(呋喃) 键合。Co2+ 复合体显示出五边形双锥体配位排列。一般来说,
Manganese Catalyzed α-Alkylation of Nitriles with Primary Alcohols
作者:Akash Jana、C. Bal Reddy、Biplab Maji
DOI:10.1021/acscatal.8b02998
日期:2018.10.5
The manganese(I) complex bearing a bidentate hydrazone ligand efficiently catalyzes the α-alkylations of nitrile using primary alcohols as alkylating agents. α-Functionalized nitriles were selectively obtained in good to excellent yields. The reaction is environmentally benign, producing water as the sole byproduct. Both benzylic and aliphatic alcohols could be used and functional groups were tolerated
Manganese complex-catalysed α-alkylation of ketones with secondary alcohols enables the synthesis of β-branched carbonyl compounds
作者:Satyadeep Waiba、Sayan K. Jana、Ayan Jati、Akash Jana、Biplab Maji
DOI:10.1039/d0cc01460e
日期:——
Herein, β-branched carbonylcompounds were synthesised via the α-alkylation of ketones with secondary alcohols under “borrowing hydrogen” catalysis. A wide range of secondary alcohols, including various cyclic, acyclic, symmetrical, and unsymmetrical alcohols, have been successfully applied under the developed reaction conditions. A manganese(I) complex bearing a phosphine-free multifunctional ligand
Manganese catalyzed C-alkylation of methyl <i>N</i>-heteroarenes with primary alcohols
作者:Akash Jana、Amol Kumar、Biplab Maji
DOI:10.1039/d1cc00181g
日期:——
C-Alkylations of nine different classes of methyl-substituted N-heteroarenes, including quinolines, quinoxalines, benzimidazoles, benzoxazoles, pyrazines, pyrimidines, pyridazines, pyridines, and triazines are disclosed. A bench stable earth-abundant Mn(I)-complex catalyzed the chemoselective hydrogen-transfer reaction utilizing a diverse range of primary alcohols as the non-fossil fuel-derived carbon