132048-51-2

Upstream product

• 98-88-4 benzoyl chloride 
• 98184-34-0 2-phenyl-5-oxo-4,5-dihydrooxazol-4-idenetriphenylphosphorane 
• 17606-70-1 (4Z)-4-benzylidene-2-phenyl-1,3-oxazol-5(4H)-one 
• 132649-36-6 2-benzoylamino-3-phenyl-3-chloroacrylic acid 
• 108-24-7 acetic anhydride 

Downstream Products

• 132649-36-6 2-benzoylamino-3-phenyl-3-chloroacrylic acid 
• 101443-62-3 α-benzoylamino-β-chloro-cinnamic acid methyl ester 
• 328280-23-5 4-[1-(Diphenyl-phosphinoyl)-1-phenyl-meth-(E)-ylidene]-2-phenyl-4H-oxazol-5-one 
• 202191-73-9 (E)-2-Benzoylamino-3-(diphenyl-phosphinoyl)-3-phenyl-acrylic acid 

Relevant academic research and scientific papers

Reactions of 4-phosphoranylidene-5(4H)-oxazolones with acylating agents

Acyl iodides and bromides give in reaction with ylides 1 the expected 4-C- or O-acylation products 2 or 3. In contrast to acyl iodides and bromides, acyl chlorides give in reaction with the ylides 1 Wittig-like reaction products 4(4-(1-chloroalkylidene)-5(4H)-oxazolones), whereas benzoyl fluoride gives 4-(1-benzoyloxybenzylidene)-5(4H)-oxazolones. Some evidence points to a mechanism of the formation of Wittig-like reaction products involving O-acylated ylides as intermediates.