Catalyst-free diazo cross-coupling to access useful 3(2<i>H</i>)-furanone derivatives
作者:Amit Vijay Sasane、Rai-Shung Liu
DOI:10.1039/d2cc05912f
日期:——
3(2H)-furanone derivatives has been achieved from metal-free cross-coupling of α-diazo ester and α-aryldiazo ketones. This reaction sequence comprises a prior Wolff rearrangement of α-aryldiazo ketones to 2-arylketenes, which are trapped in situ with α-diazo esters to form cyclopropanones before undergoing oxa-Nazarov cyclization.
α-重氮酯和α-芳基重氮酮的无金属交叉偶联已经实现了3(2 H )-呋喃酮衍生物的无催化剂合成。该反应序列包括 α-芳基重氮酮预先沃尔夫重排为 2-芳基烯酮,在进行 oxa-Nazarov 环化之前,其与 α-重氮酯原位捕获形成环丙酮。
Lu, Matthias C.; Flavin, Michael T., Heterocycles, 1984, vol. 21, # 2, p. 578
作者:Lu, Matthias C.、Flavin, Michael T.
DOI:——
日期:——
Molecular modification of anticholinergics as probes for muscarinic receptors. 3. Conformationally restricted analogs of benactyzine
作者:Michael T. Flavin、Matthias C. Lu、Emmanual B. Thompson、Hemendra N. Bhargava
DOI:10.1021/jm00385a009
日期:1987.2
The synthesis and pharmacological evaluation of conformationally restricted analogues of certain anticholinergic agents is a powerful method for probing the topography of the muscarinic receptor. In the present study, clues as to the binding conformation of structurally flexible anticholinergics are provided by approximating certain conformations of benactyzine by synthetic analogues 1-6, which are