A rapid, efficient, and green grinding assisted method for the synthesis of 2,3‐dihydro‐1H‐perimidines has been developed. 1,8‐Diaminonaphthalene and aldehydes were ground using mortar and pestle for 5 minutes affording the product in moderate to excellent yields. The methodology minimises the use of conventional workup and column chromatographic techniques.

中文翻译：

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一种新颖的无催化剂机械化学方案，用于合成2,3-二氢-1H-嘧啶

已经开发了一种快速，高效且绿色的研磨辅助方法，用于合成2,3-二氢-1 H-亚氨基吡啶。用研钵和研杵将1,8-二氨基萘和醛研磨5分钟，使产品收率适中至优异。该方法最大限度地减少了传统的后处理和柱色谱技术的使用。