Triflic acid catalysed regioselective synthesis of substituted naphthalenes by benzannulation of carbonyls with alkynes
作者:Vanajakshi Gudla、Mokhamatam Sudheer、Chinthu Joginarayana Rao、Paul Douglas Sanasi、Venkateswara Rao Battula
DOI:10.1016/j.tet.2021.132214
日期:2021.6
An interesting and facile triflic acid catalysed annulation of α-aryl carbonyls with arylalkynes is presented for the regioselective synthesis of substituted naphthalenes. The annulation reaction involves a sequence of electrophilic attack of carbonyl on arylalkyne and benzannulation catalysed by triflic acid. The present catalyst effects this transformation at room temperature itself. Intramolecular
提出了一种有趣且容易的三氟甲磺酸催化的α-芳基羰基与芳基炔的环化反应,用于取代萘的区域选择性合成。环化反应涉及羰基对芳基炔烃的亲电进攻和由三氟甲磺酸催化的苯环化的序列。本发明的催化剂在室温下自身实现这种转变。本布朗斯台德酸催化的分子内形式以优异的产率提供了包含与环系统稠合的1-芳基萘核的化合物。