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Updated: Jan 11, 2026

Facile Preparation of 4-Substituted Quinazoline Derivatives
Published on: February 15, 2016
Dehydrogenative Cyclization of 2-Aminobenzyl Alcohols with Ketones or Secondary Alcohols to Construct Quinolines
Xiaoyu Ren1, Kai Tan2, Cong-Ying Zhou2
1College of Materials Science & Engineering, Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education Taiyuan University of Technology, Taiyuan 030024, People's Republic of China.
Abstract:
Herein, we present an environmentally friendly and sustainable approach for accessing functionalized quinolines through the dehydrogenative cyclization of 2-aminobenzyl alcohols with ketones or secondary alcohols. This reaction does not require transition metal catalysts, utilizes oxygen from the air as an oxidant, and is performed at room temperature. Notably, the lignin β-O-4 model compounds can be directly converted into a variety of quinolines by using this method. Mechanistic studies reveal that the reaction proceeds through a cascade of dehydrogenation, aldol condensation, and ketoamine condensation.
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