Guanidinium-based sulfonic acid as a new Brønsted acid organocatalyst has been synthesized, characterized, and applied for the synthesis of 3,4-dihydroquinoxalin-2-amine, 1,6-dihydropyrazine-2,3-dicarbonitrile, triazolo[1,2-a]indazole-trione, and spiro triazolo[1,2-a]indazole-tetraone derivatives in an aqueous medium. The catalytic system, reported here, possesses the advantages of both homogeneous and heterogeneous catalysts and can be repetitively used in water.
基于
胍基
磺酸作为一种新型布仑斯特酸有机催化剂已被合成、表征,并应用于
水相中合成3,4-二氢喹唔啉-2-胺、1,6-二氢
吡嗪-2,3-二腈、三唑并[1,2-a]
吲哚三酮和螺三唑并[1,2-a]
吲哚四酮衍
生物。本文报道的催化体系兼具均相和非均相催化剂的优势,并且可在
水中重复使用。