Online article for Non-subscribers

Pay per view

Heterocycles has a pay-per-view service for Non-subscribers.
You will be able to directly purchase the full text article through PayPal.
Your purchased Paper can be downloaded after the payment is completed.
An e-mail will be sent the URL to download the paper.
If you have any questions, please contact:

Price: ¥ 4,400 (Yen only)
Period: This Article can be accessed for 7 days.

Paper | Regular issue | Vol 27, No. 6, 1988, pp.1411-1419
Published online, 1st January, 1970
DOI: 10.3987/COM-88-4492
Oxazolones; Part III. Reaction of 5(4H)-Oxazolones with Hydrazonoyl Halides: A New Synthesis of 5-Pyrazolones

Francesca Clerici, Riccardo Destro, Emanuela Erba, Maria Luisa Gelmi,* and Donato Pocar

*Dipartimento di Chimica Fisica ed Elettrochimica, Università digli Studi di Milano, Via Golgi 19, I-20133 Milano, Italy


Reaction of 2-(4-methoxyphenyl)-4-phenyl-5(4H)-oxazolone (1) with hydrazonoyl chlorides 2 under phase transfer conditions afforded 1,4-diaryl-4-(4-methoxybenzamido)-5(1H)-pyrazolone-3-carboxylic acid alkylesters 3 as the main products. Besides ethanedioic acid monoesters 2-aryl-2-(2,4-diaryl-oxazol-5-yl)hydrazides 4 and 4,4’-bis-(1,2,4-triaryl-5(1H)-imidazolones) 5 were obtained