Base controlled rongalite-mediated reductive aldol/cyclization and dimerization of isatylidene malononitriles/cyanoacetates
作者:Suryakant S. Chaudhari、Chandrakant B. Nichinde、Baliram R. Patil、Amardipsing S. Girase、Gamidi Rama Krishna、Anil K. Kinage
DOI:10.1039/d3ob01794j
日期:——
of rongalite in this reaction serves a dual purpose, acting both as a reducing agent and a C1 synthon. The developed approach has several advantages like a simple reaction setup, a wide substrate scope, requiring less time, using water as a green solvent, no metal or catalyst is required and products can be easily isolated via filtration with excellent yields under mild reaction conditions.
在这项研究中,我们开发了一种新颖的方法,涉及碱控制、雕白粉介导的还原/羟醛反应,然后进行亚莠亚基丙二腈/氰乙酸酯的环化,从而合成螺[2,3-二氢呋喃-3,3'-羟吲哚]。此外,我们还公开了雕白粉介导的亚茚亚基丙二腈的二聚方法,产生二螺[环戊-3'-烯]二异吲哚。在该反应中使用雕白粉具有双重目的,既充当还原剂又充当 C1 合成子。该方法具有反应装置简单、底物范围广、所需时间短、使用水作为绿色溶剂、不需要金属或催化剂、产物可以通过过滤轻松分离、在温和反应条件下收率优异等优点。