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.
Monomeric silica supported interaction of
<scp>TOSMIC</scp>
with highly functionalized imines: A green approach to azetidines via
<scp>ABB</scp>
‐type cycloaddition reaction
The reaction of TOSMIC with highlyfunctionalizedimines has been reported. The use of monomericsilica as a catalyst for the reaction has been reported for the first time. The main product of the reported green methodology, formed by the sequential attack of the two TOSMIC units upon the carbon–nitrogen double bond of highlyfunctionalizedimines, has been identified as bis(tosylmethyl)azetidine, a