An alternative method for the preparation of Erlotinib through a new chemical reaction for the preparation of the 4-(3-aminophenyl)-2-methyl-3-butyn-2-ol key intermediate of formula (IV) according to the following scheme.
Copper catalyzed direct C–H double methylation of aromatic aldehydes employing methanol as an alkylating agent
作者:Sereena Sunny、Ramasamy Karvembu
DOI:10.1039/d4gc02415j
日期:——
A mild sustainable protocol for the direct C–H double methylation of aromatic aldehydes has been accomplished by using un-activated methanol as a C1 source. Readily available, inexpensive copper sulfate has been utilized as a greener catalyst at room temperature. This methodology represents the first example of direct synthesis of tertiary alcohols from aromatic aldehydes operating via a concerted
通过使用未活化的甲醇作为 C 1源,已经完成了芳香醛直接 C-H 双甲基化的温和可持续方案。容易获得且廉价的硫酸铜已被用作室温下的绿色催化剂。该方法代表了通过协同自由基介导途径消除 H 2 O 2从芳香醛直接合成叔醇的第一个例子。该产品的克级合成成功表明了该方案在工业应用中的可行性。
New and facile substitution reactions at tertiary carbon. The m-nitrocumyl system
作者:Nathan Kornblum、Thomas M. Davies、Gary W. Earl、Norman L. Holy、Joseph W. Manthey、Michael T. Musser、R. Thomas Swiger
DOI:10.1021/ja01024a052
日期:1968.10
REACTIFS DE MARQUAGE, PROCEDES DE SYNTHESE DE TELS REACTIFS ET PROCEDES DE DETECTION DE MOLECULES BIOLOGIQUES