SOLVENT-FREE SYNTHESIS OF SPIRO[3<i>H</i>-INDOLE-3,2′-THIAZOLIDINES]
作者:Anshu Dandia、Ruby Singh、Kapil Arya
DOI:10.1080/00304940309355848
日期:2003.8
interest,14 we now describe a solvent-free one-pot synthesis of some new spiro derivatives (4a-m) incorporating three heterocyclic moieties on preparative scale in few minutes (5-8 min) in an open vessel under microwave irradiation using unmodified domestic microwave oven. This method is of general applicability. Further, indolylimines (2) also represent a novel class of anti-HIV agents which appear to act
“On water” synthesis of spiro-indoles via Schiff bases
作者:Siva S. Panda、Subhash C. Jain
DOI:10.1007/s00706-011-0697-x
日期:2012.8
AbstractA fast, efficient, and clean “on water” synthesis of new Schiffbases and their conversion to spiro compounds undermicrowaveirradiation, as well as in water, is reported. Indol-2,3-diones were reacted separately with various heterocyclic and aromatic amines in water at room temperature to obtain corresponding Schiffbases in high purity and yield. These were then converted into corresponding
Synthesis of a New Series of<i>N-</i>Mannich Bases and Polyhydroxy Mannich Bases of Pharmaceutical Interest Related to Isatin and Its Schiff Bases
作者:Elsayed M. Afsah、Ahmad A. Fadda、Ahlam H. Hanash
DOI:10.1002/jhet.3097
日期:2018.3
appropriate aldimine afforded the N‐Mannichbases 2–3 and the bis‐base 4. Treatment of 1 with glutaric dialdehyde and morpholine gave the bis‐base 5. Mannich reaction of the Schiff bases 6a–f derived from 1, led to the new Mannichbases and bis‐bases 7–9. The use of N‐methyl‐D‐glucamine as the amine component in the Mannich reaction with 6b–f led to the polyhydroxy Mannichbases 11–13.