The intramolecular cyclization mechanism of this kind diazonium salt under metal cation as catalyst were proposed firstly.
The resin (B) is preferred to be conjugated diene polymer cyclization material with unsaturated bond decrement rate more than 10%.
Methods: Starting from diethanolamine, BP897 was prepared via chlorination, cyclization, substitution, aminolysis and condensation reaction.
METHOD The title compound was synthesized from p-methylsulfonyl-acetophenone via bromination , condensation and cyclization.
It was found that amide-group (CONH2) drastically promoted the activity of the cyclization of the molecular chains.
The method adopts the amino resin to synthesize carbetocin by the solid phase cyclization technology.
Application of samarium diiodide in mediating intramolecular cyclization reactions was reviewed.
In this dissertation, we synthesized several new types of fullerene derivatives through four new cyclization reactions. 1.
METHODS Bretazenil was synthesized from 3-bromoaniline by cyclization, oxidation and ring-enlargement reaction, etc.
Method: The compound was synthesized from p-cresol and cinnamic acid by dehydration and cyclization.